Andrew Weeks1, Marleen Temmerman2. 1. Sanyu Research Unit, Department of Women's and Children's Health, University of Liverpool, Liverpool, UK; Maternity Division, Liverpool Women's Hospital, Liverpool, UK. 2. Department of Obstetrics and Gynaecology, Aga Khan University, East Africa, Nairobi, Kenya; Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium. Electronic address: marleen.temmerman@aku.edu.