title: Cochrane Column.
authors: Centre for Evidence-based Health Care, Stellenbosch University, Stellenbosch, South Africa and Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa. E-mail: charlesw@sun.ac.za.
authors: Charles S
authors: CS
authors: Wiysonge
authors: Centre for Evidence-based Health Care, Stellenbosch University, Stellenbosch, South Africa and Cochrane South Africa, South African Medical Research Council, Cape Town, South Africa. E-mail: charlesw@sun.ac.za.
authors: Charles S
authors: CS
authors: Wiysonge
authors: Babalwa
authors: B
authors: Zani
authors: Wilfred
authors: W
authors: Mbacham
authors: Centre for Evidence-based Health Care, Stellenbosch University, Stellenbosch, South Africa and.
authors: Eva Maria
authors: EM
authors: Hodel
authors: Liverpool School of Tropical Medicine, Liverpool, UK and Malawi-Liverpool-Wellcome Trust Clinical Research Programme, College of Medicine, Blantyre, Malawi.
authors: Dianne J
authors: DJ
authors: Terlouw