LONG-TERM EFFECTS OF URSODEOXYCHOLIC ACID IN PATIENTS WITH CHOLECYSTOLITHIASIS IN COMPARISON WITH THE NATURAL COURSE - A COX PROPORTIONAL HAZARD MODEL ANALYSIS
S. Tomida et al., LONG-TERM EFFECTS OF URSODEOXYCHOLIC ACID IN PATIENTS WITH CHOLECYSTOLITHIASIS IN COMPARISON WITH THE NATURAL COURSE - A COX PROPORTIONAL HAZARD MODEL ANALYSIS, Gastroenterology, 112(4), 1997, pp. 524-524