1. Department of Medicine, University of Washington, Seattle, WA, USA
2. Le Pavillon de Traitement Ambulatoire, Centre de Santé de Ziguinchor, Ziguinchor, Sénégal
3. Service des Maladies Infectieuses et Tropical, Centre Hospitalier Universitaire de Fann, Dakar, Sénégal
4. Department of Global Health, University of Washington, Seattle, WA, USA
5. Department of Epidemiology, University of Washington, Seattle, WA, USA