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Ballif, Marie; Christ, Benedikt; Anderegg, Nanina; Chammartin, Frédérique; Muhairwe, Josephine; Jefferys, Laura; Hector, Jonas; van Dijk, Janneke; Vinikoor, Michael J; van Lettow, Monique; Chimbetete, Cleophas; Phiri, Sam J; Onoya, Dorina; Fox, Matthew P; Egger, Matthias (2022). Tracing people living with HIV who are lost to follow-up at ART programs in Southern Africa: A sampling-based cohort study in six countries. Clinical infectious diseases, 74(2), pp. 171-179. The University of Chicago Press 10.1093/cid/ciab428
