1. Yaoundé Central Hospital; Centre for Development of Best Practices in Health (CDBPH); Henri Dunant Avenue PO Box 87 Yaoundé Centre Province Cameroon
2. Stellenbosch University; Centre for Evidence-based Health Care, Faculty of Medicine and Health Sciences; Tygerberg South Africa
3. Yaounde Central Hospital; Yaounde Cameroon
4. University of Yaounde; Department of Obstetrics and Gynaecology; Yaounde Cameroon