[Evaluation of electrocardiographic changes in rural men].
D000328:Adult; D003327:Coronary Disease / Q000175:diagnosis*; D003604:Czechoslovakia; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D012423:Rural Health
Hodnocení elektrokardiografických zmĕn u venkovských muzů.