Lead and generator dysfunction in children and adolescents with epicardial pacemaker and implantable cardioverter defibrillator systems: The challenge of early recognition. - Winkler, Florian; von Felten, Stefanie; Gass, Matthias; Berger, Florian; Balmer, R; Dave, Hitendu; Balmer, Christian (Pacing & Clinical Electrophysiology, 2024)