1. Center for Global Health Infectious Disease Research, College of Public Health, University of South Florida, 3720 Spectrum Blvd., Suite 304, Tampa, FL 33612, USA
2. PATH, Seattle, WA 98121, USA
3. Center for Global Health, Centers for Disease Control and Prevention, Atlanta, GA USA
4. Department of Control of Neglected Tropical Diseases, World Health Organization, Geneva, Switzerland