Warnnissorn, N. ., K. . Atisook, D. . Lohsirirwat, S. . Ratanarapee, P. . Laohaudomphan, and S. . Netsakhon. “Isospora Belli Infection Associated With Chronic Cholecystitis and Sclerosing Cholangitis in Immuncompetent Host : A Case Report”. Siriraj Medical Journal, vol. 55, no. 7, July 2003, pp. 419-24, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/245433.