Digestive Diseases and Sciences
Digestive Diseases and Sciences > 1998 > 43 > 4 > 826-833
Digestive Diseases and Sciences > 1998 > 43 > 6 > 1275-1284
Digestive Diseases and Sciences > 1998 > 43 > 7 > 1465-1473
Digestive Diseases and Sciences > 1998 > 43 > 11 > 2542-2548