1. Department of Epidemiology, Milken Institute School of Public Health George Washington University 950 New Hampshire Ave, NW, 5th Floor Washington DC 20052 USA
2. Department of Epidemiology Milken Institute School of Public Health, George Washington University 950 New Hampshire Ave, NW, 5th Floor Washington DC 20052. USA
3. Public Health Research Unit, Division of Community Health Promotion Florida Department of Health 4052 Bald Cypress Way, Bin A24 Tallahassee FL 32399‐1712 USA
4. Division of Children's Medical Services, Florida Department of Health 4052 Bald Cypress, Bin A06 Tallahassee FL 32399‐1712 USA
5. Public Health Research, Division of Community Health Promotion Florida Department of Health 4052 Bald Cypress Way, Bin A24 Tallahassee FL 32399‐1712 USA
6. Division of Intramural Research, National Institute on Minority Health and Health Disparities 9000 Rockville Pike, Building 3 Room 5W05 Bethesda MD 20892 USA