Vaishnav, M., Garg, S. and Popat, V. (2017) “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(5), pp. 505-514. doi: 10.17511/ijmrr.2017.i05.12.