title: Circadian variation of arrhythmic events, electrophysiological properties, and the autonomic nervous system.
authors.forename: S
authors.initials: S
authors.lastname: Behrens
authors.forename: M R
authors.initials: MR
authors.lastname: Franz
mesh_terms: D001145:Arrhythmias, Cardiac / Q000209:etiology* / Q000503:physiopathology; D001341:Autonomic Nervous System / Q000502:physiology*; D002940:Circadian Rhythm; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006801:Humans; D012032:Refractory Period, Electrophysiological / Q000502:physiology*