1. The Center for Interdisciplinary Research on AIDS, Yale University, New Haven, CT, USA
2. Division of Global Health, School of Medicine, University of California San Diego, San Diego, CA, USA
3. School of Nursing and Health Studies, University of Washington Bothell, Bothell, WA, USA
4. School of Nursing, University of California San Francisco, San Francisco, CA, USA
5. Department of Health Behavior & Health Education, University of Michigan School of Public Health, Ann Arbor, MI, USA