THE LOWER ESOPHAGEAL RING. LONG TERM FOLLOW-UP OF SYMPTOMATIC AND ASYMPTOMATIC RINGS.
D003680:Deglutition Disorders; D004940:Esophageal Stenosis; D004947:Esophagus / Q000002:abnormalities; D005500:Follow-Up Studies; D006801:Humans; D019736:Prostheses and Implants; D011859:Radiography
DEGLUTITION DISORDERS; ESOPHAGEAL STENOSIS; RADIOGRAPHY