[1] Medecins Sans Frontieres, Coxs Bazar, Bangladesh
[2] McMaster Univ, Dept Hlth Res Methods Evidence & Impact, Hamilton, ON, Canada
[3] Bangladesh Univ Hlth Sci, Dept Epidemiol, Dhaka, Bangladesh
[4] Medecins Sans Frontieres, Barcelona, Spain
[5] London Sch Hyg & Trop Med, Fac Infect & Trop Dis, London, England