title: [Long-term observations of children and adolescents with an artificial heart valve].
mesh_terms: D000293:Adolescent; D001021:Aortic Valve / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis / Q000534:rehabilitation*; D006801:Humans; D008943:Mitral Valve / Q000601:surgery; D008991:Monitoring, Physiologic; D011475:Prosthesis Failure
vernacular_title: Długoletnie obserwacje dzieci i młodziezy ze sztuczna zastawka w sercu.