Focal pulsed field ablation for complex ventricular arrhythmias after prior failed or intraprocedurally ineffective radiofrequency ablation. - Weyand S; Adam V; Biehler P; Hägele P; Löbig S; Pinchuk A; Waechter C; Buckert D; Seizer P (Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing, 2026)