title: [Echocardiographic parameters of of the Soviet MKCh-25 valve].
mesh_terms: D000293:Adolescent; D000328:Adult; D004452:Echocardiography; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve; D014586:USSR
vernacular_title: Ekhokardiograficheskie parametry otechestvennogo klapana MKCh-25.