1. Department Health Promotion & Physical Education, WellStar College of Health and Human Services, Kennesaw State University, Kennesaw, Georgia, USA
2. Department of Respiratory Therapy, Georgia State University, Atlanta, Georgia, USA
3. Moffitt Cancer Center, Tampa, Florida, USA
4. Department of Epidemiology and Biostatistics, School of Public Health, Makerere University, Kampala, Uganda
5. Boston University, Boston, Massachusetts, USA
6. Uganda Youth Development Link, Kampala, Uganda
7. Center for Research and Information on Substance Abuse, Uyo, Nigeria