title: [Incidence of ECG changes among rural population (author's transl)].
mesh_terms: D000328:Adult; D003327:Coronary Disease / Q000175:diagnosis / Q000453:epidemiology*; D003604:Czechoslovakia; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D012423:Rural Health
vernacular_title: Výskyt elektrokardiografických zmĕn u venkovské populace