1. University of Southern Denmark Odense Denmark
2. Kilimanjaro Christian Medical Center Moshi Tanzania
3. Kilimanjaro Christian Medical University College Moshi Tanzania
4. Department of Preventive Medicine and Public Health University of Granada Granada Spain
5. CIBER of Epidemiology and Public Health (CIBERESP) Granada Spain
6. Department of Clinical Research University of Southern Denmark Odense Denmark
7. Department of Obstetrics and Gynecology Odense University Hospital Odense Denmark
8. Department of Public Health University of Southern Denmark Esbjerg Denmark