1. University of Cape Town; Vaccines for Africa Initiative, Institute of Infectious Disease and Molecular Medicine; Anzio Road Cape Town South Africa 7925
2. Stellenbosch University; Centre for Evidence-based Health Care, Faculty of Medicine and Health Sciences; PO Box 241 Cape Town South Africa 8000
3. South African Medical Research Council; Cochrane South Africa; Francie van Zijl Drive, Parow Valley Cape Town Western Cape South Africa 7505