Digestive Diseases and Sciences
Digestive Diseases and Sciences > 1997 > 42 > 2 > 354-358
Digestive Diseases and Sciences > 1997 > 42 > 4 > 767-771
Digestive Diseases and Sciences > 1997 > 42 > 2 > 354-358
Digestive Diseases and Sciences > 1997 > 42 > 4 > 767-771