1. Department of Obstetrics and Gynaecology, Aminu Kano Teaching Hospital, Kano, Nigeria
2. Department of Obstetrics and Gynaecology, Muhammad Abdullahi Wase Teaching Hospital, Kano, Nigeria
3. Department of Radiology, Muhammad Abdullahi Wase Teaching Hospital, Kano, Nigeria
4. Department of Radiology, Aminu Kano Teaching Hospital, Kano, Nigeria