V., Manoharan G., and Maharaja P. “Comparison of Ultrasound and Serum Amylase in the Diagnosis of Acute Pancreatitis”. International Surgery Journal 7, no. 12 (November 27, 2020): 4030–4033. Accessed February 27, 2026. https://www.ijsurgery.com/index.php/isj/article/view/6554.