Minimally invasive off-pump valve-in-a-ring implantation: the atrial transcatheter approach for re-operative mitral valve replacement after failed repair

J Kempfert, J Blumenstein, M. W.A Chu, P Pritzwald Stegmann, T Kobilke, V Falk, F. W Mohr and T. Walther

European Journal of Cardio-Thoracic Surgery 35 ( 6 ): 965 - 969 , 2009