1. Gulf States Hemophilia & Thrombophilia Center; University of Texas Health Science Center at Houston; Houston TX USA
2. Division of Human Development and Disability; National Center on Birth Defects and Developmental Disabilities; CDC; Atlanta GA USA
3. National Center on Birth Defects and Developmental Disabilities; CDC; Atlanta GA USA
4. The Hemophilia Center at Oregon Health & Science University; Portland OR, USA
5. Division of Blood Disorders; National Center on Birth Defects and Developmental Disabilities; CDC; Atlanta GA USA