[Origin of the change of tone 1 of the heart sound].
D000328:Adult; D003937:Diagnosis, Differential; D006321:Heart / Q000503:physiopathology*; D006326:Heart Auscultation; D006331:Heart Diseases / Q000175:diagnosis / Q000503:physiopathology*; D006347:Heart Sounds; D006801:Humans; D008297:Male; D008875:Middle Aged
O geneze izmeneniia zvuchnosti 1 tona.