1. Department of Geography, University of Dar es Salaam, Dar es Salaam, Tanzania
2. Division of Infectious Diseases, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, USA
3. Department of Applied Health Science, Indiana University School of Public Health, Bloomington, IN, USA
4. Department of International Health, Johns Hopkins University School of Public Health, Baltimore, MD, USA
5. Department of Health Promotion, Education, and Behavior, University of South Carolina, Columbia, SC, USA
6. Department of Behavioral Science and Health Education, Saint Louis University, Saint Louis, MO, USA
7. Marie Stopes Tanzania, Dar es Salaam, Tanzania
8. Yale University School of Nursing, West Haven, CT, USA