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Babaei A, Szabo A, Shad S, Massey BT. Chronic daily opioid exposure is associated with dysphagia, esophageal outflow obstruction, and disordered peristalsis. Neurogastroenterol Motil. 2019 Jul;31(7):e13601. PMID: 30993800; PMCID: PMC6559831. |