Grabowski , Marcin. “Specificity of Clinical Trials With Cardiac Implantable Devices in Heart Failure”. Medycyna Faktow (J EBM) 5, no. 4(17) (December 31, 2012): 76-79. Accessed November 13, 2026. https://www.journalsmededu.pl/index.php/jebm/article/view/2445.