title: [A study of ultrasonic cardiograms of normal men at high altitude (author's transl)].
mesh_terms: D000293:Adolescent; D000328:Adult; D000531:Altitude; D004452:Echocardiography; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D005082:Physical Exertion