X-ray classroom. II.
D004931:Esophageal Achalasia; D005705:Gallbladder Diseases; D006801:Humans; D007410:Intestinal Diseases; D011859:Radiography; D013270:Stomach; D014965:X-Rays
CARDIOSPASM; GALLBLADDER DISEASES; INTESTINAL DISEASES; RADIOGRAPHY; STOMACH