1. Center on the Early Life Origins of Disease, Department of Population, Family, and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
2. Division of Research, Office of Epidemiology and Research, Maternal and Child Health Bureau, Health Resources and Services Administration, Rockville, Maryland
3. Metals Laboratory, Environmental and Chemical Laboratory Services, State of New Jersey Department of Health, Trenton
4. Office of Health Equity, Health Resources and Services Administration, Rockville, Maryland
5. Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
6. Department of Pediatrics, Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts
7. Division of General Pediatrics and Adolescent Medicine, Department of Pediatrics, The Johns Hopkins University School of Medicine, Baltimore, Maryland