Shrestha, Samrat, Mecklina Shrestha, Prahasan Rai, and Suresh Maharjan. “Predictive Validity of the Boey Scoring System for Postoperative Outcomes in Perforated Peptic Ulcer Disease: A Prospective Study from a Tertiary Center of Nepal”. International Surgery Journal 12, no. 10 (September 25, 2025): 1630–1636. Accessed October 25, 2025. https://www.ijsurgery.com/index.php/isj/article/view/11386.