1. Centro Hospitalar Vila Nova de Gaia/Espinho, Department of Obstetrics and Gynaecology, CINTESIS ‐ Center for Health Technology and Services Research University of Porto Porto Portugal
2. George Washington University Milken School of Public Health Washington District of Columbia USA
3. Department of Obstetrics and Gynecology, Faculty of Medicine and Health Sciences Stellenbosch University Cape Town South Africa