University of Cape Town (UCT) - University of Cape Town Lung InstituteUniversity of Cape Town (UCT) - Centre for Lung Infection and Immunity, Stellenbosch University - Division of Pulmonology, University of Cape Town (UCT) - Groote Schuur Hospital, University of Cape Town (UCT) - University of Cape Town Lung Institute, University of Cape Town (UCT) - Department of Anaesthesia and Perioperative Medicine, University of Cape Town (UCT) - Division of Infectious Diseases & HIV Medicine, University of Cape Town (UCT) - Department of Medicine, University of Cape Town (UCT) - Department of Medicine, University of Cape Town (UCT) - Wellcome Centre for Infectious Disease Research in Africa, University of Cape Town (UCT) - Department of Medicine, University of Cape Town (UCT) - Department of Medicine, University of Cape Town (UCT) - Department of Medicine, University of Cape Town (UCT) - Department of Medicine, University of Cape Town (UCT) - University of Cape Town Lung Institute, University of Cape Town (UCT) - Department of Statistical Sciences, Stellenbosch University - Department of Medicine, Stellenbosch University - Department of Medicine, Stellenbosch University - Department of Medicine, Stellenbosch University - Department of Medicine, Stellenbosch University - Department of Medicine, Stellenbosch University - Division of Pulmonology, University of Cape Town (UCT) - Centre for Lung Infection and Immunity and Stellenbosch University - Department of Medicine