State of the art: leadless ventricular pacing : A national expert consensus of the Austrian Society of Cardiology. - Steinwender C; Lercher P; Schukro C; Blessberger H; Prenner G; Andreas M; Kraus J; Ammer M; Stühlinger M (Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing, 2020)