Persistence and clearance of Ebola virus RNA from seminal fluid of Ebola virus disease survivors: a longitudinal analysis and modelling study - Sissoko, D; Duraffour, S; Kerber, R; Kolie, J; Beavogui, A; Camara, A; Colin, G; Rieger, T; Oestereich, L; Pályi, B; Wurr, S; Guedj, J; et al. (Lancet Global Health, 2016)