1. Department of Health Sciences Global HealthUniversity Medical Center GroningenUniversity of Groningen Groningen The Netherlands
2. Ethiopian Public Health Institute Addis Ababa Ethiopia
3. Ministry of Health Addis Ababa Ethiopia
4. Jhpiego, an affiliate of Johns Hopkins University Baltimore MD USA
5. Department of Obstetrics and Gynaecology Leiden University Medical Centre Leiden The Netherlands
6. Athena InstituteVU University Amsterdam The Netherlands
7. Department of Obstetrics and Gynecology Leeuwarden Medical Center Leeuwarden The Netherlands