Vaishnav, Mitsu, Sameep Garg, and Vijay Popat. “Role of Ca 19-9 As a Tumor Marker in Diagnosis and Prognosis of Pancreatic Carcinoma and Cholangiocarcinoma (A Study of 46 Cases)”. International Journal of Medical Research and Review 5, no. 5 (May 31, 2017): 505-514. Accessed December 23, 2024. https://ijmrr.medresearch.in/index.php/ijmrr/article/view/872.