1. South African Medical Research Council; Cochrane South Africa; Cape Town South Africa
2. Medical Center, Faculty of Medicine, University of Freiburg; Evidence in Medicine / Cochrane Germany; Breisacher Straße 153 Freiburg Baden-Württemberg Germany 79110
3. University of Rwanda; College of Medicine and Health Science; Kigali Rwanda
4. Medical Center - University of Freiburg; Institute for Evidence in Medicine (for Cochrane Germany Foundation); Breisacher Straße 153 Freiburg Germany 79110