1 Department of Surgery, Military Hospital Narahenpita, 08 Elvitigala Mawatha, Colombo, 00800, Sri Lanka. Electronic address: amila@ratnayake.me.
2 Department of Surgery, Rajarata University of Sri Lanka, Saliyapura, AD 50008 Sri Lanka.
3 Postgraduate Institute of Medicine, University of Colombo, 160, Prof. Nandadasa Kodagoda Mawatha, Colombo 00700, Sri Lanka.
4 Department of Surgery, Walter Reed National Military Medical Center, 8901 Wisconsin Ave, Bethesda, Maryland 20889 United States; Uniformed Service University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, Maryland 20814 United States. Electronic address: taworlto@yahoo.com.