New instruments for cardiac surgery.
D006348:Cardiac Surgical Procedures; D003251:Constriction, Pathologic; D006801:Humans; D008943:Mitral Valve; D008946:Mitral Valve Stenosis; D013771:Tetralogy of Fallot / Q000601:surgery*
MITRAL VALVE/stenosis; TETRALOGY OF FALLOT/surgery