Task: Answer Verification
Input (English): Question: Is neoplastic progression in short-segment Barrett 's oesophagus associated with impairment of chemical clearance , but not inadequate acid suppression by proton pump inhibitor therapy?
Answer: Neoplastic progression in SSBO is associated with impairment of chemical clearance, but not inadequate acid suppression by PPI therapy. Neoplastic progression in SSBO can be predicted by a low PSPW index.
Output (English): yes