Zeljkovic, I., H. Burri, A. Breitenstein, P. Ammann, A. Mueller, A. Auricchio, E. Delacrétaz, K. Dickstein, C. Linde, C. Normand, and C. Sticherling. “Cardiac Resynchronisation Therapy (CRT) Survey II: CRT Implantation in Europe and in Switzerland”. Swiss Medical Weekly, vol. 148, no. 3334, Aug. 2018, p. w14643, doi:10.4414/smw.2018.14643.