Scheule, Albertus M., Wolfram Beierlein, Andreas Straub, and Gerhard Ziemer. “Extracorporeal Circulation Without External Clamping and Cannulation of the Aorta: Transventricular Placement of a New Multifunctional Aortic Cannula”. The Heart Surgery Forum 7, no. 6 (January 4, 2005): E569-E570. Accessed April 19, 2024. https://journal.hsforum.com/index.php/HSF/article/view/1163.