Nigam, Vinod Kumar, and Siddharth Nigam. “Nigam’s Scoring System: A Reliable and Accurate Scoring System to Diagnose Acute Appendicitis”. International Surgery Journal 12, no. 3 (February 27, 2025): 326–332. Accessed October 13, 2025. https://www.ijsurgery.com/index.php/isj/article/view/10901.