Task: Answer Verification
Input (English): Question: Does cricopharyngeal myotomy increase the risk of esophagopharyngeal acid regurgitation?
Answer: Increased esophageal acid exposure is common and esophagopharyngeal regurgitation is rare in unselected patients undergoing cricopharyngeal myotomy for pharyngeal dysphagia. Myotomy does not increase the frequency of esophagopharyngeal acid regurgitation in such patients.
Output (English): no