title: [Phenomenon of extra-premature extrasystole (clinico-experimental study)].
mesh_terms: D000368:Aged; D000818:Animals; D005117:Cardiac Complexes, Premature / Q000175:diagnosis / Q000209:etiology*; D002415:Cats; D003327:Coronary Disease / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008297:Male; D009200:Myocardial Contraction; D013997:Time Factors
vernacular_title: Fenomen vozniknoveniia sverkhrannykh ekstrasistol (kliniko-eksperimental'noe issledovanie).