1. Department of Infectious Diseases, The Royal Hospital, Muscat, PC 111, Oman
2. Department of Microbiology, The Royal Hospital, Muscat, PC 111, Oman
3. Department of Colorectal Surgery, The Royal Hospital, Muscat, PC 111, Oman
4. Department of Histopathology, The Royal Hospital, Muscat, PC 111, Oman