1. a Division of Infectious Diseases and International Health, Department of Medicine , Duke University Medical Center , Durham , NC , United States
2. b Kikundi cha Wanawake Kilimanjaro Kupambana na UKIMWI (KIWAKKUKI Women Against AIDS in Kilimanjaro) , Moshi , Tanzania
3. c Center for Health Policy , Duke University , Durham , NC , USA
4. d Duke Global Health Institute , Duke University , Durham , NC , USA
5. e Department of Pathology , Duke University Medical Center , Durham , NC , USA
6. f Kilimanjaro Christian Medical Centre , Moshi , Tanzania
7. g Kilimanjaro Christian Medical College , Tumaini University , Moshi , Tanzania