Affiliation: | 1. The Esophageal and Swallowing Center, Division of Gastroenterology and Hepatology, Case Western Reserve University, MetroHealth Medical Center, 2500 MetroHealth Drive, Cleveland, OH, 44109 -1998, USA 2. Center for Swallowing & Esophageal Disorders, Digestive Disease Institute, Gastroenterology & Hepatology, Cleveland Clinic, Cleveland, OH, USA
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