Downstream overdrive pacing and intracardiac concealed fusion to guide rapid identification of atrial tachycardia after atrial fibrillation ablation. - Barbhaiya CR; Baldinger SH; Kumar S; Chinitz JS; Enriquez AD; John R; Stevenson WG; Michaud GF (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, 2018)