Singh, Rajkishore, Rajiv Singh, and Kulwant Singh. “Role of Modified Alvarado Scoring System and USG Abdomen in Acute Appendicitis: An Overview”. International Surgery Journal 4, no. 12 (November 25, 2017): 4029–4033. Accessed November 10, 2025. https://www.ijsurgery.com/index.php/isj/article/view/2104.