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Ka, Ibrahima; Faye, Magatte; Diop, Papa Saloum; Niang, Amadou Bocar; Ndoye, Jean Marc; Fall, Babacar . (2018). Cancers biliaires: aspects épidémiologiques cliniques et thérapeutiques à propos de 20 cas. Pan African Medical Journal, 29(), –. doi:10.11604/pamj.2018.29.13.9922 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research