1. Department of Obstetrics and Gynecology, Saba University School of Medicine, Saba, Netherlands Antilles
2. Department of Obstetrics and Gynecology, Komfo Anokye Teaching Hospital, Kumasi, Ghana
3. Department of Obstetrics and Gynecology, University of Health and Allied Sciences, Ho, Ghana
4. Department of Radiology, Komfo Anokye Teaching Hospital, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
5. Department of Anesthesiology, Komfo Anokye Teaching Hospital, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
6. Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, USA