[Methods of studying the esophagus].
D001706:Biopsy; D004935:Esophageal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D004945:Esophagoscopy; D004947:Esophagus / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008365:Manometry; D011859:Radiography
"Métodos de estudio del esófago".