Interatrial electrical dissociation with concealed atypical atrial flutter during catheter ablation. - Franchin L; Bocchino PP; Barbero U; Ventriglia G; De Ferrari GM; Ferraris F (Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, 2021)