1. Navrongo Health Research Centre, Ghana Health Service, Navrongo, Ghana
2. Navrongo War Memorial Hospital, Ghana Health Service, Navrongo, Ghana
3. Julius Global Health, Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands
4. Regional Institute for Population Studies, University of Ghana, Legon, Accra, Ghana
5. Swiss Tropical and Public Health Institute, Basel, Switzerland
6. University of Basel, Basel, Switzerland
7. Department of Obstetrics and Gynecology, University of Nairobi, Nairobi, Kenya
8. Department of Epidemiology and Biostatistics, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
9. Upper East Regional Health Directorate, Ghana Health Service, PMB, Bolgatanga, Ghana
10. Policy Planning Monitoring and Evaluation Division, Ghana Health Service, Accra, Ghana