1. Clinical Research Program, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA
2. Rho Federal Systems Division, Inc., Chapel Hill, North Carolina, USA
3. New Orleans Health Department, New Orleans, Louisiana, USA
4. Visionary Consulting Partners, LLC, Fairfax Station, Virginia, USA
5. SRA International, Inc., Durham, NC, USA
6. School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana, USA
7. Department of Pediatrics, Tulane University School of Medicine, New Orleans, Louisiana, USA
8. Health Sciences Center School of Nursing, Louisiana State University, New Orleans, Louisiana, USA
9. National Institute of Child Health and Development, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA