1. Department of Surgery, Faculty of Medicine, University of Jaffna, Adiyapatham Road, Kokuvil West, Kokuvil, Jaffna 40000, Northern province, Sri Lanka,
2. Department of Pathology, Faculty of Medicine, University of Colombo, No 25, Kynsey Road, Colombo 00700, Western province, Sri Lanka,
3. National Hospital, Hospital Square, Regent Street, Colombo 01000, Western province, Sri Lanka
4. Colombo North Teaching Hospital, Hospital Inner Road, Ragama, Gampaha 11010, Western province, Sri Lanka,
5. Department of Anatomy, Faculty of Medicine, University of Colombo, No 25, Kynsey Road, Colombo 00700, Western province, Sri Lanka,