1. Epidemic Intelligence Service, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
2. Division of Violence Prevention, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
3. Division of Global HIV and TB, Global Health Center, Centers for Disease Control and Prevention, Private Bag, Windhoek 12029, Namibia
4. Division of Global HIV and TB, Global Health Center, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
5. International Training and Education Center for Health, Department of Global Health, University of Washington, Seattle, WA 98195, USA
6. Ministry of Gender Equality, Poverty Eradication, and Social Welfare, Private Bag, Windhoek 13359, Namibia
7. US Agency for International Development, Washington, DC 20004, USA