Authors: Robert S Wallis; Sibuse Ginindza; Trevor Beattie; Nishanee Arjun; Morongwe Likoti; Vinodh A Edward; Mohammed Rassool; Khatija Ahmed; Katherine Fielding; Bintou A Ahidjo; Mboyo D T Vangu; Gavin Churchyard Journal: Lancet Respir Med Date: 2021-03-16 Impact factor: 102.642