Electrophysiological characteristics of the heart in highlanders.
D000328:Adult; D000531:Altitude; D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D006332:Cardiomegaly / Q000175:diagnosis; D004562:Electrocardiography; D004594:Electrophysiology; D005080:Exercise Test; D006321:Heart / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D000860:Hypoxia / Q000150:complications; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D011660:Pulmonary Heart Disease / Q000175:diagnosis / Q000209:etiology