1. South African Medical Research Council; Cochrane South Africa; Francie van Zijl Drive, Parow Valley Cape Town Western Cape South Africa 7505
2. Stellenbosch University; Centre for Evidence-based Health Care, Faculty of Medicine and Health Sciences; Cape Town South Africa
3. Norwegian Institute of Public Health; P.O. Box 4404 Nydalen Oslo Norway N-0403
4. South African Medical Research Council; Health Systems Research Unit; PO Box 19070 Tygerberg South Africa 7505
5. Institute for Clinical Effectiveness and Health Policy (IECS-CONICET); Argentine Cochrane Centre; Dr. Emilio Ravignani 2024 Buenos Aires Capital Federal Argentina C1414CPV
6. Pontificia Universidad Católica de Chile; Department of Public Health, School of Medicine; Marcoleta 434 Santiago Chile
7. Pontificia Universidad Católica de Chile; Evidence Based Health Care Program; Santiago Chile
8. Cochrane; Cochrane Editorial Unit; St Albans House, 57-59 Haymarket London UK SW1Y 4QX
9. Pontificia Universidad Católica de Chile; Department of Family Medicine, Faculty of Medicine; Centro Medico San Joaquin, Vicuña Mackenna 4686 Macul Santiago Chile
10. Pontificia Universidad Católica de Chile; Department of Internal Medicine and Evidence-Based Healthcare Program, Faculty of Medicine; Lira 44, Decanato Primer piso Santiago Chile