[Identification of the original site of ventricular premature beats in patients without underlying cardiac disease by body surface mapping].
D000293:Adolescent; D000328:Adult; D000368:Aged; D005117:Cardiac Complexes, Premature / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged