N. . Warnnissorn, 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 Med J, vol. 55, no. 7, pp. 419–424, Jul. 2003.