Digestive Diseases and Sciences
Digestive Diseases and Sciences > 1997 > 42 > 3 > 645-653
Digestive Diseases and Sciences > 1997 > 42 > 6 > 1194-1198
Digestive Diseases and Sciences > 1997 > 42 > 6 > 1233-1241
Digestive Diseases and Sciences > 1997 > 42 > 12 > 2426-2431