1. Division of Emergency Medicine, Duke University, 2301 Erwin Rd, Durham, NC, USA
2. Kilimanjaro Christian Research Institute, PO Box 3010, Moshi, Tanzania
3. Department of Medicine, Duke University, 2301 Erwin Rd, Durham, NC, USA
4. Duke Global Health Institute, 310 Trent Dr, Durham, NC, USA
5. Department of Emergency Medicine, Kilimanjaro Christian Medical Centre, PO Box 3010, Moshi, Tanzania