1. Department of Obstetrics and Gynaecology, University of Dodoma, College of Health Sciences, P.O. Box 395, Dodoma, Tanzania
2. Department of Internal Medicine, University of Dodoma, College of Health Sciences, P.O. Box 395, Dodoma, Tanzania
3. Department of Obstetrics & Gynaecology, Catholic University of Health & Allied Sciences, P.O. Box 1464, Mwanza, Tanzania