1. Centre for Evidence‐based Health Care, Faculty of Medicine and Health Sciences Stellenbosch University Francie van Zijl drive, Parow Cape Town 7500 South Africa
2. Centre for Evidence‐based Health Care, Faculty of Medicine and Health Sciences Stellenbosch University South Africa
3. Centre for Vaccines and Immunology (CVI) National Institute for Communicable Diseases (NICD) Johannesburg South Africa
4. Centre for the Development of Best Practices in Health (CDBPH) Yaounde Cameroon
5. Francie van Zijl drive, Parow Cape Town 7500 South Africa
6. Institute for Medical Informatics, Biometry and Epidemiology Ludwig‐Maximilians‐University Marchioninistr. 15 Munich 81377 Germany