title: Atrioventricular block, short P-Q interval, frequent extrasystole and sinus tachycardia in the population of Croatia.
mesh_terms: D000328:Adult; D001145:Arrhythmias, Cardiac / Q000453:epidemiology*; D005117:Cardiac Complexes, Premature / Q000453:epidemiology*; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000453:epidemiology*; D015022:Yugoslavia