A vectorcardiographic study of the P loop using high amplification techniques. Analysis of 135 cases.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000669:Amplifiers, Electronic; D001794:Blood Pressure; D002648:Child; D002675:Child, Preschool; D003327:Coronary Disease / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D012214:Rheumatic Heart Disease / Q000175:diagnosis; D014672:Vectorcardiography