1. Department of Social and Behavioral Sciences, Yale School of Public Health, New Haven, Connecticut, USA.
2. Department of Psychology, Miami University, Miami, Ohio, USA.
3. Department of Community Health Sciences, Boston University School of Public Health, Boston, Massachusetts, USA.
4. Division of Adolescent/Young Adult Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.
5. Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA.