TY - JOUR AU - Borger, Michael PY - 2012 TI - Preface JF - Annals of Cardiothoracic Surgery; Vol 1, No 2 (July 26, 2012): Transapical Aortic Valve Implantation Y2 - 2012 KW - N2 - UR - https://www.annalscts.com/article/view/489