Kandel BP, Koirala N, Sharma D, et al. Short Term Outcomes after Elective Gastrointestinal Surgery in Octogenarians: A Retrospective Matched Cohort Study. Journal of Institute of Medicine. 2025;47(1):33-38. Accessed July 22, 2026. https://www.nepjol.info/index.php/JIOM/article/view/82812