Sticherling, Christian, Beat Schaer, Martin Coenen, Michael Kühne, Peter Ammann, and Stefan Osswald. “Cardiac Resynchronization Therapy in Chronic Heart Failure”. Swiss Medical Weekly 136, no. 3940 (October 7, 2006): 611–611. Accessed April 14, 2024. https://smw.ch/index.php/smw/article/view/651.