1. Department of Community Health, Tufts University, Medford, Massachusetts.
2. The Fenway Institute, Fenway Health, Boston, Massachusetts.
3. Center for Interdisciplinary Research on AIDS, Yale University, New Haven, Connecticut.
4. Department of Social and Behavioral Sciences, University of California, San Francisco, San Francisco, California.
5. Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, Massachusetts.
6. Department of Psychology, University of Maryland, Baltimore County, Baltimore, Maryland.
7. Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts.
8. Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts.