1. Surgery Department, Obafemi Awolowo University, Ile-Ife, Nigeria
2. Surgery Department, Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria
3. Massachusetts Institute of Technology, Cambridge, MA
4. Morbid Anatomy and Forensic Medicine Department, Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria
5. Radiology Department, Obafemi Awolowo University, Ile-Ife, Nigeria
6. Memorial Sloan Kettering Cancer Centre, New York, NY