[1] UTHlth Sch Publ Hlth, Dept Epidemiol Human Genet & Environm Sci, Houston, TX USA
[2] Baylor Coll Med, Dept Pediat, Sect Hematol Oncol, Houston, TX USA
[3] State Hlth Serv, Birth Defects Epidemiol & Surveillance Branch, Texas Dept, Austin, TX USA
[4] Univ S Florida, Coll Publ Hlth, Chiles Ctr, Tampa, FL USA
[5] Massachusetts Dept Publ Hlth, Ctr Birth Defects Res & Prevent, Boston, MA USA
[6] Ctr Dis Control & Prevent, Natl Ctr Birth Defects & Dev Disabil, Atlanta, GA USA
[7] Univ Arkansas Med Sci, Fay W Boozman Coll Publ Hlth, Dept Epidemiol, Little Rock, AR USA
[8] North Carolina Dept Hlth & Human Serv, State Ctr Hlth Stat, Birth Defects Monitoring Program, Raleigh, NC USA
[9] Univ Iowa, Coll Publ Hlth, Dept Epidemiol, Iowa, LA USA
[10] New York State Dept Hlth, Ctr Environm Hlth, Birth Defects Registry, New York, NY USA