[ECG-characteristics of the duration of P-R interval in blue-collar and white-collar workers of the "Record" plant].
D000328:Adult; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009787:Occupational Medicine; D015022:Yugoslavia
EKG karakteristike trajanja P-R intervala kod radnika i sluzbenika u fabrici gume "Rekord".