Digestive Diseases and Sciences
Digestive Diseases and Sciences > 1997 > 42 > 2 > 307-313
Digestive Diseases and Sciences > 1997 > 42 > 2 > 300-306
Digestive Diseases and Sciences > 1997 > 42 > 3 > 580-585
Digestive Diseases and Sciences > 1997 > 42 > 5 > 998-1002
Digestive Diseases and Sciences > 1997 > 42 > 7 > 1354-1361