Task: Answer Verification
Input (English): Question: Does normalization of esophageal pH with high-dose proton pump inhibitor therapy result in regression of Barrett 's esophagus?
Answer: Although symptoms improved, erosive esophagitis healed, and squamous islands increased, there was no significant decrease in the length of Barrett's esophagus. Control of esophageal pH alone is not sufficient for the reversal of Barrett's esophagus.
Output (English): no