title: The extrasystolic mechanism as the entrainment of an oscillator.
authors: University of the Witwatersrand, Johannesburg, South Africa.
authors: L
authors: L
authors: Schamroth
authors: D H
authors: DH
authors: Martin
authors: M
authors: M
authors: Pachter
mesh_terms: D000818:Animals; D005117:Cardiac Complexes, Premature / Q000503:physiopathology*; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008955:Models, Cardiovascular