Combined functional mitral valve surgery and coronary artery bypass grafting in patients with severe impaired left ventricles is still a challenge - Garbade, J; Kluttig, R; Seeburger, J; Davierwala, P; Lehmann, S; Pfannmüller, B; Borger, MA; Mohr, FW (The Thoracic and Cardiovascular Surgeon, 2013)