Digestive Diseases and Sciences
Digestive Diseases and Sciences > 1997 > 42 > 3 > 503-513
Digestive Diseases and Sciences > 1997 > 42 > 3 > 492-496
Digestive Diseases and Sciences > 1997 > 42 > 5 > 962-971
Digestive Diseases and Sciences > 1997 > 42 > 6 > 1302-1311
Digestive Diseases and Sciences > 1997 > 42 > 8 > 1792-1795