1. Department of Obstetrics and GynecologyGeorge Washington University School of Medicine Washington District of Columbia USA
2. Department of NutritionUniversity of Texas Austin Texas USA
3. Epidemiology BranchEunice Kennedy Shriver National Institute of Child Health and Human DevelopmentNational Institutes of HealthDepartment of Health and Human Services Bethesda Maryland USA
4. Department of PediatricsStanford University Stanford California USA
5. Tetra Tech Sciences Arlington Virginia USA