1. Yaounde University Hospital Center, Yaounde, Cameroon
2. Department of Surgery, Yaounde General Hospital, Yaounde, Cameroon
3. Radiology Department, Yaounde General Hospital, Yaounde, Cameroon
4. Faculty of Medicine and Biomedical Sciences (FMBS), Yaounde, Cameroon
5. Radiology Department, Yaounde Gynaeco-Obstetric and Paediatric Hospital, Yaounde, Cameroon