Varma, Ankur, Aditi Varshney Varma, and Jebin Joseph. “A Comparative Study of Alvarado and RIPASA Scoring Systems in Diagnosis of Acute Appendicitis”. International Surgery Journal 6, no. 12 (November 26, 2019): 4378–4382. Accessed January 31, 2026. https://www.ijsurgery.com/index.php/isj/article/view/5027.