title: [Difficult problems of cardiac surgery].
mesh_terms: D006348:Cardiac Surgical Procedures / Q000379:methods; D006330:Heart Defects, Congenital / Q000601:surgery; D016027:Heart Transplantation; D006350:Heart Valve Prosthesis / Q000379:methods; D006801:Humans; D013771:Tetralogy of Fallot / Q000601:surgery
vernacular_title: Trudnye problemy kardiokhirurgii.