Warnnissorn, N.; Atisook, K.; Lohsirirwat, D.; Ratanarapee, S.; Laohaudomphan, P.; Netsakhon, S. Isospora belli infection associated with Chronic Cholecystitis and Sclerosing Cholangitis in Immuncompetent Host : A Case Report. Siriraj Med J 2003, 55, 419-424.