1. Department of Emergency Medicine, Brown University Warren Alpert Medical School, Providence, RI, USA
2. International Medical Corps, Washington, DC, USA
3. Brown University, School of Public Health, Center for Statistical Sciences, Department of Biostatistics, Providence, RI, USA
4. Warren Alpert Medical School of Brown University, Providence, RI, USA
5. Brown University, Providence, RI, USA
6. Ministry of Health, Monrovia, Liberia
7. College of Medicine and Allied Health Sciences, University of Sierra Leone, Freetown, Sierra Leone
8. Department of Health Sciences, Boston University: Sargent College, Boston, MA, USA