Department of Surgery;
St.Vincent's Hospital;
College of Medicine;
The Catholic University of Korea;
Seoul 16247;
South Korea;
College of Pharmacy;
Chungbuk National University;
Cheongju 28644;
South Korea;
Department of Surgery;
Seoul St.Mary’s Hospital;
College of Medicine;
the Catholic University of Korea;
Seoul 06591;
South Korea;
Catholic Central Laboratory of Surgery;
Institute of Biomedical Industry;
College of Medicine;
the Catholic University of Korea;
Seoul 06591;
South Korea;
Bio and Drug Discovery Division;
Korea Research Institute of Chemical Technology;
Daejeon 34114;
South Korea;
Department of Surgery;
Daejeon St.Mary's Hospital;
College of Medicine;
the Catholic University of Korea;
Seoul 34943;
South Korea;
Department of Surgery;
Uijeongbu St.Mary's Hospital;
College of Medicine;
the Catholic University of Korea;
Seoul 11765;
South Korea;
Department of Biomedicine and Health Science;
College of Medicine;
the Catholic University of Korea;
Seoul 06591;
South Korea;
Department of Surgery;
Eunpyeong St.Mary’s Hospital;
College of Medicine;
the Catholic University of Korea;
Seoul 03312;
South Korea;
Department of Medicinal Chemistry and Pharmacology;
University of Science and Technology;
Daejeon 34113;
South Korea;
Tert-amyl; ethyl; ether; Gallstones; Methyl-tert-butyl; ether; Contact; litholytic; agent;