1. Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts.
2. The Fenway Institute, Fenway Health, Boston, Massachusetts.
3. Yale School of Public Health, New Haven, Connecticut.
4. Division of Adolescent and Young Adult Medicine, Boston Children's Hospital, Boston, Massachusetts.
5. Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts.
6. Division of General Pediatrics, Boston Children's Hospital, Boston, Massachusetts.
7. Department of Pediatrics, Harvard Medical School, Boston, Massachusetts.