1. EMedicine - Klinefelter Syndrome : Article By Harold Chen, MD, MS, FAAP, FACMG klinefelter syndrome In 1942, Klinefelter et al published a report on 9 men who had enlarged breasts, sparse facial and body hair, small testes, and inability to produce sperm. In 1959, these http://www.emedicine.com/PED/topic1252.htm

(advertisement) Home Specialties CME PDA ... Patient Education Articles Images CME Patient Education Advanced Search Link to this site Back to: eMedicine Specialties Pediatrics Genetics And Metabolic Disease Klinefelter Syndrome Last Updated: May 14, 2003 Rate this Article Email to a Colleague Synonyms and related keywords: XXY male, XXY syndrome, XXXY syndrome, XXYY syndrome, XXXXY syndrome, XXXYY syndrome AUTHOR INFORMATION Section 1 of 11 Author Information Introduction Clinical Differentials ... Bibliography Author: Harold Chen, MD, MS, FAAP, FACMG , Chief, Professor, Department of Pediatrics, Section of Perinatal Genetics, Louisiana State University Medical Center Harold Chen, MD, MS, FAAP, FACMG, is a member of the following medical societies: American Academy of Pediatrics American College of Medical Genetics American Medical Association American Society of Human Genetics , and Teratology Society Editor(s): Ian Krantz, MD , Assistant Professor, Department of Pediatrics, University of Pennsylvania and Children's Hospital of Philadelphia; Robert Konop, PharmD

2. Klinefelter Syndrome Support Group Website klinefelter syndrome Support Group Home Page. Living with klinefelter syndrome My Story http://klinefeltersyndrome.org/

Klinefelter Syndrome Support Group Home Page Living with Klinefelter Syndrome - My Story Support Group Information Variant and Prenatal Diagnosis Information (47XYY, 47XXX, 48,XXXY, 48,XXYY, 49,XXXXY E-mail lists for support and information Current Research Studies Informative Resources Klinefelter Syndrome Organizations ... Websites for non-Klinefelter links especially other genetic conditions Send any comments or questions to the webmaster. Bookmark This Site To Return For Updates This page created by Stefan Read my Dreambook! Sign my Dreambook! The information, text, graphics, and links provided on this site are provided for those seeking information about Klinefelter Syndrome/XXY. The opinions of the webmaster are his alone and do not necessarily reflect the opinions of any organization with which he is affiliated. The webmaster does not warrant the accuracy, or completeness of any links provided herein. Submit your page to 34 popular sites for free, using one form! This page last updated on May 5, 2004. You are visitor since July 26, 2000

3. NICHD - Publications On-line Health Information Media Publications. Understanding klinefelter syndrome. A Guide for XXY Males and Their Families. Written by Robert Bock. Office of Research Reporting, NICHD. WHAT IS klinefelter syndrome? In 1942, Dr. researchers discovered that men with klinefelter syndrome, as this group of symptoms extra chromosome plays see the accompanying section, "Chromosomes and klinefelter syndrome.") http://www.nichd.nih.gov/publications/pubs/klinefelter.htm

Home Search Sitemap Contact ... Publications Understanding Klinefelter Syndrome A Guide for XXY Males and Their Families Written by: Robert Bock Office of Research Reporting, NICHD NIH Pub. No. 93-3202 August 1993 CONTENTS What is Klinefelter Syndrome? Chromosomes and Klinefelter Syndrome Causes Diagnosis ... Resources WHAT IS KLINEFELTER SYNDROME? In 1942, Dr. Harry Klinefelter and his coworkers at the Massachusetts General Hospital in Boston published a report about nine men who had enlarged breasts, sparse facial and body hair, small testes, and an inability to produce sperm. By the late 1950s, researchers discovered that men with Klinefelter syndrome, as this group of symptoms came to be called, had an extra sex chromosome, XXY instead of the usual male arrangement, XY. (For a more complete explanation of the role this extra chromosome plays, see the accompanying section, "Chromosomes and Klinefelter syndrome." In the early 1970s, researchers around the world sought to identify males having the extra chromosome by screening large numbers of newborn babies. One of the largest of these studies, sponsored by the National Institute of Child Health and Human Development (NICHD), checked the chromosomes of more than 40,000 infants. Based on these studies, the XXY chromosome arrangement appears to be one of the most common genetic abnormalities known, occurring as frequently as 1 in 500 to 1 in 1,000 male births. Although the syndrome's cause, an extra sex chromosome, is widespread, the syndrome itself-the set of symptoms and characteristics that may result from having the extra chromosome-is uncommon. Many men live out their lives without ever even suspecting that they have an additional chromosome.

4. Klinefelter Syndrome klinefelter syndrome resources, national and international support groups, clinics with genetic counselors and geneticists klinefelter syndrome. klinefelter syndrome Associates, Inc. PO Box http://www.kumc.edu/gec/support/klinefel.html

Klinefelter syndrome PO Box 119 Roseville, CA 95678-0119 Phone: 916.773.1449 Fax: 916.773.1449 E-mail: help@genetic.org Web site: http://www.genetic.org/ks/ Japenese version) Resources for families Introductory video about XXY , by mother whose son has Klinefelter Syndrome - The Even Exchange, Newsletter American Association for Klinefelter Syndrome Information and Support (AAKSIS) Klinefelter Syndrome Support Group Home Page numerous links to other organizations and resources, created by an adult with Klinefelter Syndrome, regional groups, varients, international groups International Groups: Australia Australian Klinefelter Support Group 4 Victoria Rd Acquire Fields NEW 02564 AUSTRALIA Victoria Support Group 41 Jesmond Rd Cordon, Victoria 03136 AUSTRALIA Klinefelter Syndrome Support Group P.O.Box 3 Glendenning Mail Center NEW 2761 AUSTRALIA Canada Canada Klinefelter Support Group Apt. 3, 2867 Young St. Toronto, ON. Canada M4N 2J5 England (United Kingdom) Klinefelter's Syndrome Association 56 Little Yeldham Road Little Yeldham, Halstead, Essex CO9 4QT

5. AAKSIS Home American Association for klinefelter syndrome Information and Support A Spanish translation of the complete "Understanding klinefelter syndrome A Guide for XXY Males and Their http://www.aaksis.org/

skip navigation links American Association for Klinefelter Syndrome Information and Support About Education Home KS/XXY Information ... Visitor Center b Our Visitor Center allows access to diagnostic and treatment resources, the AAKSIS Journal, our newsletter, Kaleidoscope, a search function, and much more. Become a member of AAKSIS and receive our newsletter three times year NEWS AAKSIS 2004 CONFERENCE. For more information please click here Hypogonadal adolescent boys are needed for a research study sponsored by Unimed Pharmaceuticals. A Spanish translation of the complete "Understanding Klinefelter Syndrome: A Guide for XXY Males and Their Families," by Robert Bock. AAKSIS 2002 Conference , Columbus Ohio, August 2-4, a resounding success with 140+ attending from all over North America. Read about it in the Columbus Dispatch 2002 Conference Pictures New Klinefelter Syndrome/XXY site devoted to Ohio New Klinefelter Syndrome/47XXY study and a brain-imaging study at the NIMH About Education Home ... Visitor Center

6. KS&A Home Page Special Notices Adult Retreat Announced. Information on the Pediatric/Adolescent Conference. klinefelter syndrome and Associates. Welcome to the klinefelter syndrome and Associates Web Site. this site, you will find information about klinefelter syndrome, when it was first discovered, the common http://www.genetic.org/

Search Support Newsletter Additional Resources ... Sex Chromosome Variations NOTICE Recently you received a copy of the Spring 2004 Even Exchange ) 999-9428. Please use that number to update your records or to contact Paulette Rothacher or Robert Grace. You may also update your records via the Internet at http://www.genetic.org/ks/member_info , or contact either of these Program Coordinators at prothacher@genetic.org or rgrace@genetic.org , respectively. We apologize for any inconvenience or confusion this may have caused. Special Notices: Adult Retreat Announced Information on the Pediatric/Adolescent Conference Klinefelter Syndrome and Associates Welcome to the Klinefelter Syndrome and Associates Web Site. On this site, you will find information about Klinefelter Syndrome, when it was first discovered, the common characteristics, and treatment. In the near future, there will also be information about other sex chromosome variations, such as XXX in females. We also provide information on current research projects into Klinefelter Syndrome, and other resources which may be of help such as a list of links on the internet. In the "Support" section, we provide support through national and regional conferences, our E-Mail support lists, newsletters, and more.

7. Klinefelter Syndrome / Family Village Search AltaVista for "klinefelter syndrome" Who to Contact interact with families and individuals dealing with klinefelter syndrome . They offer parentto-parent matching through http://www.familyvillage.wisc.edu/lib_klin.htm

Klinefelter Syndrome Who to Contact Where to Go to Chat with Others Learn More About It Web Sites ... Search AltaVista for "Klinefelter Syndrome" Who to Contact 49, XXXXY Syndrome Association 10001 N E 74th Street Vancouver, Washington, USA 98662-3801 49, XXXXY Syndrome Association's purpose is to interact with families and individuals dealing with Klinefelter Syndrome . They offer parent-to-parent matching through their newsletter or by calling for more information. Their newsletter, 49er Banner , is published two or three times a year. They have articles about the syndrome they will copy and send for a small fee. Klinefelter Syndrome and Associates P.O. Box 119 Roseville, CA 95678-0119 ks47xxy@ix.netcom.com Web: http://www.genetic.org/ks/ Klinefelter Syndrome and Associates has a mission to enhance the quality of KS individuals' lives by assisting in their right of early diagnosis and treatment. They work together to insure KS individuals are treated with dignity. They are advocates for KS individuals and families through active participation in the professional, educational, and research communities at national, state, and local levels. KSA fosters mutual support and create an environment conducive to open communication among our membership. Where to Go to Chat with Others 49variant · The 49ers Group This is a list available only to those parents who have a son with the 49 variant. This list has been formed to provide support, education and information. It is a restricted list and members must be approved by the moderator.

8. Klinefelter Syndrome A chromosome abnormality that affects only men and causes hypogonadism. http://www.drkoop.com/ency/article/000382.htm

Advertisement Search Dr. Koop Web MEDLINE Special Offers TV Specials Top Features Schizophrenia Hair Loss Liver Disease Allergies ... Impotence Resources Subscribe to our Free Newsletter Health Encyclopedia ... Privacy Policy Advertisement Advertisement Disease Injury Nutrition Poison ... Prevention Klinefelter syndrome Definition: Klinefelter syndrome is a chromosome abnormality that affects only men and causes hypogonadism Alternative Names: 47 X-X-Y syndrome Causes, incidence, and risk factors: A person's sex is determined by the X and Y chromosomes. Normally, men have an X and a Y and women have two X's. In Klinefelter syndrome, a male has two X's and a Y. The condition is common and affects 1 in 500 men. The infant appears normal at birth, but the defect usually becomes apparent in puberty when secondary sexual characteristics fail to develop (or develop late). At this time, testicular changes occur that eventually result in infertility in the majority of those affected. Some mild cases may go undetected, with no abnormalities present except infertility. One risk factor for this condition is the mother giving birth at an older age. In most cases, the problem develops during fetal development and is not inherited from one or both parents.

9. Klinefelter Syndrome Home About Us Feedback Teacher Resources. HomeGenetic Disorder CornerWhat Can Our Chromosomes Tell Us? klinefelter syndrome. klinefelter syndrome. klinefelter syndrome occurs in 1 in 500 to 1 in 1000 live births. http://gslc.genetics.utah.edu/units/disorders/karyotype/klinefelter.cfm

Genetic Science Learning Center at the Eccles Institute of Human Genetics University of Utah Home ... What Can Our Chromosomes Tell Us? Klinefelter Syndrome Klinefelter Syndrome Klinefelter Syndrome occurs in 1 in 500 to 1 in 1000 live births. People with this disorder develop as males with subtle characteristics that become apparent during puberty. They are often tall and usually do not develop secondary sex characteristics such as facial hair, or underarm and pubic hair. Men and boys with Klinefelter Syndrome have a Y chromosome and 2 X chromosomes. This is an example of trisomy Where does the extra chromosome come from? In about half of Kleinfelter cases, the extra X chromosome is from the mother's egg, while in the other half of cases the extra chromosome is from the father's sperm. Additional Resources Klinefelter Syndrome and Associates Turner Center If you are having problems with an animation on this page you may need to download the latest version of the Macromedia Flash player

10. SmartGroups - The Free Service For Group Communication A list for people with Klinefelter's to talk about how it affects their lives, families, friends, relationships, and work, and where to get good medical treatment. http://www.smartgroups.com/groups/ksa-uk

New Users Register Existing Users Login What is SmartGroups? Take Tour Help Centre About Us Advertise Groups Search Groups What is SmartGroups? Invited to a Group? Start your own Group ... Place an Advert email password Remember me (this activates a cookie) Wanadoo Broadband Surf up to 10 times faster for only £17.99 a month. Get Broadband now! SmartGroups Announcements Find out what is happening on SmartGroups by subscribing to SG Announce , for regular alerts. More about Smartgroups Smartgroups is not just about group email. Find out how you can easily arrange events, share pictures, group opinions and much more! Home Help Find Group Create Group ... Privacy and Cookie policy

11. Klinefelter Syndrome Support Group Website Website for klinefelter syndrome support for those seeking information about klinefelter syndrome/XXY. The opinions of the webmaster are his alone and do not http://www.klinefeltersyndrome.org/

Klinefelter Syndrome Support Group Home Page Living with Klinefelter Syndrome - My Story Support Group Information Variant and Prenatal Diagnosis Information (47XYY, 47XXX, 48,XXXY, 48,XXYY, 49,XXXXY E-mail lists for support and information Current Research Studies Informative Resources Klinefelter Syndrome Organizations ... Websites for non-Klinefelter links especially other genetic conditions Send any comments or questions to the webmaster. Bookmark This Site To Return For Updates This page created by Stefan Read my Dreambook! Sign my Dreambook! The information, text, graphics, and links provided on this site are provided for those seeking information about Klinefelter Syndrome/XXY. The opinions of the webmaster are his alone and do not necessarily reflect the opinions of any organization with which he is affiliated. The webmaster does not warrant the accuracy, or completeness of any links provided herein. Submit your page to 34 popular sites for free, using one form! This page last updated on May 5, 2004. You are visitor since July 26, 2000

12. Stefan LIVING WITH klinefelter syndrome. My name is Stefan, I was diagnosed with klinefelter syndrome (KS) in February 1996 at the age of 25. http://klinefeltersyndrome.org/Stefan.htm

LIVING WITH KLINEFELTER SYNDROME My name is Stefan, I was diagnosed with Klinefelter Syndrome (KS) in February 1996 at the age of 25. Being diagnosed with KS has been, for the most part, a big sigh of relief after a life of frustrations. Granted, it was difficult and had a period of adjustment especially after finding out at age 25. Klinefelter Syndrome, as you may or may not know, is hard to diagnose. It occurs in roughly 1 in 500 males. First, I would like to tell you a bit about my life, mainly before the diagnosis. I was born in March of 1970. I was a happy baby, at least indicated by my parents and other family members. I was also told that I behaved well and did what I was told. However, it always seemed throughout my early childhood, teens and even somewhat now that I was very shy, reserved and had trouble making friends among my peers. My temper always got the best of me and I would fly into rages for no apparent reason. One minute I’d be very calm, the next I would be picking fights and throwing things. My parents knew when I was very young, that there was something about me that wasn’t right. But they could never figure it out until the diagnosis of Klinefelter Syndrome in February 1996.

13. KS&A Home Page Pediatric/Adolescent Conference. klinefelter syndrome and Associates. Welcome to the klinefelter syndrome and Associates Web Site. On this http://www.genetic.org/ks/

Search Support Newsletter Additional Resources ... Sex Chromosome Variations NOTICE Recently you received a copy of the Spring 2004 Even Exchange ) 999-9428. Please use that number to update your records or to contact Paulette Rothacher or Robert Grace. You may also update your records via the Internet at http://www.genetic.org/ks/member_info , or contact either of these Program Coordinators at prothacher@genetic.org or rgrace@genetic.org , respectively. We apologize for any inconvenience or confusion this may have caused. Special Events: Adult Retreat Announced Information on the Pediatric/Adolescent Conference Klinefelter Syndrome and Associates Welcome to the Klinefelter Syndrome and Associates Web Site. On this site, you will find information about Klinefelter Syndrome, when it was first discovered, the common characteristics, and treatment. In the near future, there will also be information about other sex chromosome variations, such as XXX in females. We also provide information on current research projects into Klinefelter Syndrome, and other resources which may be of help such as a list of links on the internet. In the "Support" section, we provide support through national and regional conferences, our E-Mail support lists, newsletters, and more.

14. KS&A - Sex Chromosome Variations - About 47XXY Sex Chromosome Variations About 47XXY. klinefelter syndrome is probably the most common chromosomal variation found in humans. In http://www.genetic.org/ks/scvs/47xxy.htm

Search Support Newsletter Additional Resources ... Sex Chromosome Variations Sex Chromosome Variations: About 47XXY Klinefelter Syndrome is probably the most common chromosomal variation found in humans. In random surveys, it is found to appear about once in every 500 to one in every 1,000 live born males. Since the largest percentage of these men would have never been diagnosed otherwise, it shows that in many cases affected individuals lead healthy, normal lives with no particular medical or social questions. Klinefelter Syndrome is diagnosed through a karyotype; a chromosome analysis usually done on a blood sample. Klinefelter Syndrome is caused by a chromosome variation involving the sex chromosomes. The person with Klinefelter Syndrome is a male who, because of this chromosome variation, has a hormone imbalance. While Dr. Harry Klinefelter accurately described this condition in 1942 , it was not until 1956 that other researchers reported that many boys with this description had 47 chromosomes in each cell of their bodies instead of the usual number of 46. This extra sex (X) chromosome causes the distinctive make-up of these boys. All men have one X chromosome and one Y chromosome, but sometimes a variation will result in a male with an extra X. This is Klinefelter Syndrome and is often written as 47,XXY. There are other, less common variations such as 48,XXYY; 48,XXXY; 49,XXXXY ; and XY/XXY mosaic. All of these are considered Klinefelter Syndrome variants. Common Characteristics

15. About Klinefelter Syndrome/47XXY - Caution Current studies have shown that the diagnosis of klinefelter syndrome does NOT indicate mental retardation, deviant behavior, or other generalizations. http://www.aaksis.org/BrochureA.cfm

skip navigation links KS/XXY Information About Education Home KS/XXY Information ... Visitor Center b Caution About 47XXY/KS XXY Diagnosis Health Considerations ... Fertility Note to Professionals Current studies have shown that the diagnosis of Klinefelter Syndrome does NOT indicate mental retardation, deviant behavior, or other generalizations. Most individuals diagnosed with this condition have average to superior intelligence with only about 20% scoring below average on standardized intelligence tests. Next - About 47XXY/Klinefelter Syndrome About Education Home ... Visitor Center

16. What Is XXY? A medical and information site for klinefelter syndrome, XXY, and variants http://www.47xxy.org/XXY.htm

TOP What is XXY? What is XXY?: What is XXY? History XXY or Ks? Treatment ... In Conclusion To print all 9 of the above sections as one complete document, click here There are 23 pairs of chromosomes found in each cell of the body, and each contain genes that determine our coloring, our features, and our sex. Women inherit two X chromosomes one from each parent, written 46,XX. Men inherit an X chromosome from their mothers and a Y chromosome from their fathers, written 46,XY. Some individuals, however, have an additional X chromosome in their chromosomal arrangement, referred to as 47,XXY, or more commonly, just XXY. The cause is unknown, yet XXY occurs in approximately 1 in every 500 to 1000 live male births, making it one of the most common chromosome variations . The XXY variation is identified in an individual through a karyotype, a buccal smear, or FISH Next - History Aneuploidies E - Mail Lists ... Top This page first created: May 24, 1999 Bottom

17. Klinefelter Syndrome? A parent's point of view, with articles. http://xxy.50megs.com/INDEX.HTML

Ecommerce Solution Free Web Space Free Web Site Web Hosting ... Dial up $14.95 or NetZero Internet Service $9.95 OUTSTANDING WEBSITE AWARD sponsored by Disability Network Inc. Klinefelter Syndrome? Or is he XXY? There IS a difference! A Parent's View Boys are made of special things and sometimes some Xtra special things! Allow me to begin by telling you that many doctors and researchers do not refer to Klinefelter Syndrome when referring to a child because a child can not and does not have the symptoms of what Harry Klinefelter researched and not all babies and boys will go on to develop the symptoms associated with Klinefelters Syndrome and until they do, they do not have a syndrome. There is the blessing of the early diagnosis. SO much can be changed but just having that advantage. Use it to yours!! So you have just been told that your baby has an extraX.......There is so much more to know than just that! Please take the time to educate yourself. The unknown is a scary place to be and usually the FACTS are not as bad as they first may seem. Please read on! I was in your shoes just a short time ago when I was told that my two month old baby had this disorder. I was terrified....but I also love my child with all of my heart so I took the time to learn. I will share with you what I felt, heard, read and learned and hopefully provide you with something I wished I had had available to me the day I was told.

18. KS&A - Sex Chromosome Variations - Biography Of Klinefelter Syndrome Understanding klinefelter syndrome A Guide for XXY Males and Their Families What is klinefelter syndrome? Causes. Diagnosis. What to Tell Families, Friends, and XXY boys http://www.genetic.org/ks/scvs/KS_NIH.htm

Search Support Newsletter Additional Resources ... Sex Chromosome Variations Sex Chromosome Variations: About XXY Understanding Klinefelter Syndrome: A Guide for XXY Males and Their Families Written by: Robert Bock, Office of Research Reporting, NICHD U.S. Department of Health and Human Services Public Health Service National Institutes of Health National Institute of Child Health and Human Development NIH Pub. No. 93-3202 August 1993 CONTENTS What is Klinefelter Syndrome? Causes Diagnosis What to Tell Families, Friends, and XXY boys ... Resources What is Klinefelter Syndrome? In 1942, Dr. Harry Klinefelter and his coworkers at the Massachusetts General Hospital in Boston published a report about nine men who had enlarged breasts, sparse facial and body hair, small testes, and an inability to produce sperm. By the late 1950s, researchers discovered that men with Klinefelter syndrome, as this group of symptoms came to be called, had an extra sex chromosome, XXY instead of the usual male arrangement, XY. (For a more complete explanation of the role this extra chromosome plays, see the accompanying section, "Chromosomes and Klinefelter syndrome.") In the early 1970s, researchers around the world sought to identify males having the extra chromosome by screening large numbers of newborn babies. One of the largest of these studies, sponsored by the National Institute of Child Health and Human Development (NICHD), checked the chromosomes of more than 40,000 infants.

19. Klinefelter Syndrome? OUTSTANDING WEBSITE AWARD. 2000 sponsored by Disability Network Inc. award2.jpg. klinefelter syndrome? Or is he XXY? There IS a difference! A Parent s View. http://xxy.50megs.com/

Ecommerce Solution Free Web Space Free Web Site Web Hosting ... Dial up $14.95 or NetZero Internet Service $9.95 OUTSTANDING WEBSITE AWARD sponsored by Disability Network Inc. Klinefelter Syndrome? Or is he XXY? There IS a difference! A Parent's View Boys are made of special things and sometimes some Xtra special things! Allow me to begin by telling you that many doctors and researchers do not refer to Klinefelter Syndrome when referring to a child because a child can not and does not have the symptoms of what Harry Klinefelter researched and not all babies and boys will go on to develop the symptoms associated with Klinefelters Syndrome and until they do, they do not have a syndrome. There is the blessing of the early diagnosis. SO much can be changed but just having that advantage. Use it to yours!! So you have just been told that your baby has an extraX.......There is so much more to know than just that! Please take the time to educate yourself. The unknown is a scary place to be and usually the FACTS are not as bad as they first may seem. Please read on! I was in your shoes just a short time ago when I was told that my two month old baby had this disorder. I was terrified....but I also love my child with all of my heart so I took the time to learn. I will share with you what I felt, heard, read and learned and hopefully provide you with something I wished I had had available to me the day I was told.

20. AAKSIS Home Email list, conference, membership, newsletter, regional groups and resource links. http://www.AAKSIS.org/

skip navigation links American Association for Klinefelter Syndrome Information and Support About Education Home KS/XXY Information ... Visitor Center b Our Visitor Center allows access to diagnostic and treatment resources, the AAKSIS Journal, our newsletter, Kaleidoscope, a search function, and much more. Become a member of AAKSIS and receive our newsletter three times year NEWS AAKSIS 2004 CONFERENCE. For more information please click here Hypogonadal adolescent boys are needed for a research study sponsored by Unimed Pharmaceuticals. A Spanish translation of the complete "Understanding Klinefelter Syndrome: A Guide for XXY Males and Their Families," by Robert Bock. AAKSIS 2002 Conference , Columbus Ohio, August 2-4, a resounding success with 140+ attending from all over North America. Read about it in the Columbus Dispatch 2002 Conference Pictures New Klinefelter Syndrome/XXY site devoted to Ohio New Klinefelter Syndrome/47XXY study and a brain-imaging study at the NIMH About Education Home ... Visitor Center

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