Safety and efficacy of malaria vaccine candidate R21/Matrix-M in African children: a multicentre, double-blind, randomised, phase 3 trial by Datoo, MS, Dicko, A, Tinto, H, Ouédraogo, J-B, Hamaluba, M, Olotu, A, Beaumont, E, Ramos Lopez, F, Natama, HM, Weston, S, Chemba, M, Compaore, YD, Issiaka, D, Salou, D, Some, AM, Omenda, S, Lawrie, A, Bejon, P, Rao, H, Chandramohan, D, Roberts, R, Bharati, S, Stockdale, L, Gairola, S, Greenwood, BM, Ewer, KJ, Bradley, J, Kulkarni, PS, Shaligram, U, Hill, AVS