1. aDepartment of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Center on the Developing Child at Harvard University
2. bUnited States Census Bureau, Mortality Research Group, Suitland, Maryland
3. cThe Heller School for Social Policy and Management, Institute for Child, Youth and Family Policy, Brandeis University, Waltham Massachusetts
4. dDepartment of Psychology
5. eGraduate School of Education, Harvard University, Cambridge, Massachusetts
6. fHarvard Medical School and Boston Children’s Hospital, Boston, Massachusetts
7. gDepartment of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts