ECG Response: August 18, 2015.
D002637:Chest Pain / Q000209:etiology* / Q000503:physiopathology; D004562:Electrocardiography; D005080:Exercise Test; D006801:Humans; D008297:Male; D008875:Middle Aged; D013615:Tachycardia, Sinoatrial Nodal Reentry / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology