1. PhD Candidate, Department of Community Health and Health Behavior, School of Public Health and Health Professions, University at Buffalo, SUNY, 330 Kimball Tower, Buffalo, NY 14212, USA.
2. Assistant Professor, London School of Hygiene and Tropical Medicine, London, UK
3. Independent Consultant, UNICEF Office of Research-Innocenti, Dar es Salaam, Tanzania
4. Associate Dean for Research, Department of Community Health and Health Behavior, University at Buffalo, Buffalo, NY, USA
5. Associate Professor, School of Nursing, University at Buffalo, Buffalo, NY, USA
6. Associate Professor, Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, NY, USA