[1] Ctr Dis Control & Prevent, Birth Defects Monitoring & Res Branch, Div Birth Defects & Infant Disorders, Natl Ctr Birth Defects & Dev Disabil, Atlanta, GA USA
[2] Seattle Childrens Hosp, Div Dev Med, Seattle, WA USA
[3] Univ Washington, Sch Med, Seattle, WA USA
[4] Duke Univ, Div Urol, Med Ctr, Durham, NC USA
[5] Cincinnati Childrens Hosp Med Ctr, Cincinnati, OH 45229 USA
[6] Texas Childrens Hosp, Baylor Coll Med, Div Dev Pediat, Houston, TX USA
[7] Cleveland Clin, Glickman Urol & Kidney Inst, Cleveland, OH USA
[8] Univ Alabama Birmingham, Dept Urol, Birmingham, AL USA
[9] Univ Texas Southwestern Med Ctr Dallas, Dallas, TX 75390 USA
[10] Scottish Rite Children, Dallas, TX USA
[11] Childrens Hosp Los Angeles, Los Angeles, CA 90027 USA
[12] Univ Southern Calif, Keck Sch Med, Los Angeles, CA USA
[13] Riley Hosp Children, Indianapolis, IN USA
[14] Universal Consulting Serv Inc, Atlanta, GA USA
[15] Ctr Dis Control & Prevent, Atlanta, GA USA
[16] Ann & Robert H Lurie Childrens Hosp Chicago, Chicago, IL 60611 USA