Mortality attributable to third-generation cephalosporin resistance in Gram-negative bloodstream infections in African hospitals: a multi-site retrospective study di Dramowski, A, Ong’ayo, G, Rehman, AM, Whitelaw, A, Labi, A-K, Obeng-Nkrumah, N, Ndir, A, Magwenzi, MT, Onyedibe, K, Wolkewitz, M, de Kraker, MEA, Scott, JAG, Aiken, AM, Mujuru, H, Odipo, E, Mwarumba, S, Mturi, N, Gordon, NC, Diop, A, Ndiaye, AT, Shwe, D, Diala, UM, Okolo, M, Grundmann, H