[Contribution to the electrocardiographic study of the duration variations of the QT space].
D000328:Adult; D000368:Aged; D001938:Brazil; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D044465:White People
Contribución al estudio electrocardiográfico de las variaciones de duración del espacio QT.