1. National Center for Injury Prevention and Control, Division of Overdose Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
2. National Center on Birth Defects and Developmental Disabilities, Division of Congenital and Developmental Disorders, Centers for Disease Control and Prevention, Atlanta, Georgia
3. National Center for Chronic Disease Prevention and Health Promotion, Division of Reproductive Health, Centers for Disease Control and Prevention, Atlanta, Georgia
4. United States Public Health Service, Commissioned Corps, Rockville, Maryland