| occur in the stomach | 0.32 |
| pain | 0.26 |
| weight loss | 0.16 |
| cancer | 0.25 |
| caused by infection of … | 0.68 |
| caused by use of nonste… | 0.67 |
| biopsied | 0.43 |
| caused by stress | 0.38 |
| associated with continu… | 0.34 |
| diagnosed | 0.25 |
| induced by indomethacin | 0.25 |
| caused by aspirin | 0.21 |