Atrash Hani K, Johnson Kay, Adams Myron, Cordero José F, Howse Jennifer
National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, E-87, Atlanta, GA, 30333, USA.
Matern Child Health J. 2006 Sep;10(5 Suppl):S3-11. doi: 10.1007/s10995-006-0100-4. Epub 2006 Jun 14.