[1] University of South Carolina,South Carolina Rural Health Research Center, Arnold School of Public Health
[2] National Center on Birth Defects and Developmental Disabilities,Department of Public Health Sciences, College of Health and Human Services
[3] Centers for Disease Control and Prevention,Bureau of Epidemiology, Division of Disease Control and Health Protection, Florida Department of Health
[4] University of North Carolina at Charlotte,Birth Defects Surveillance Program, Department of Community and Family Health, College of Public Health
[5] Florida Birth Defects Registry,undefined
[6] University of South Florida,undefined