Affiliation: | 1. Department of Surgery, Faculty of Medicine and Allied Sciences, Rajarata University of Sri Lanka, Saliyapura, Anuradhapura, Sri Lanka (Drs Thalgaspitiya and Siriwardhana);2. Department of Community Medicine, Faculty of Medicine and Allied Sciences, Rajarata University of Sri Lanka, Saliyapura, Anuradhapura, Sri Lanka (Dr Wijerathne) |