TY - CHAP M1 - Book, Section TI - Esophageal Sphincter Dysfunction, Upper A1 - Doherty, Gerard M. PY - 2010 T2 - Quick Answers Surgery AB - • Cervical dysphagia• Cricopharyngeal bar on barium swallow• Pharyngoesophageal diverticulum (Zenker diverticulum) in some patients SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/10/13 UR - accesssurgery.mhmedical.com/content.aspx?aid=58110363 ER -