1. Department of Global Public Health, Health Systems and Policy, Karolinska Institutet, Stockholm, Sweden
2. Department of Obstetrics and Gynaecology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
3. Department of Community Health Nursing, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
4. Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK
5. Department of Family Medicine, College of Medicine, University of Malawi, Blantyre, Malawi