Digestive Diseases and Sciences
Digestive Diseases and Sciences > 1998 > 43 > 11 > 2353-2362
Digestive Diseases and Sciences > 1998 > 43 > 11 > 2379-2383
Digestive Diseases and Sciences > 1998 > 43 > 11 > 2353-2362
Digestive Diseases and Sciences > 1998 > 43 > 11 > 2379-2383