The uneasy oesophagus.
D000787:Angina Pectoris / Q000175:diagnosis; D003937:Diagnosis, Differential; D004874:Ergonovine; D004931:Esophageal Achalasia / Q000175:diagnosis; D004935:Esophageal Diseases / Q000175:diagnosis*; D006801:Humans
D004874:Ergonovine