Khadka, Pralaya. 2016. “Importance of Preoperative Health Status and Intraoperative Factors in Predicting Adverse Outcomes in Geriatric Patients Undergoing Major Gastrointestinal Surgery”. Journal of Society of Surgeons of Nepal 18 (3):24. https://doi.org/10.3126/jssn.v18i3.15287.