RT Journal Article SR Electronic T1 Adenocarcinoma of the gastroesophageal junction presenting as achalasia JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 137 OP 142 VO 46 IS 4 A1 Maleki, Mansour F. A1 Fleshier, Bertram A1 Achkar, Edgar A1 Sheibani, Khalil YR 1979 UL http://www.ccjm.org/content/46/4/137.abstract AB