Closed‐loop stimulation as a physiological rate‐modulated pacing approach based on intracardiac impedance to lower the atrial tachyarrhythmia burden in patients with sinus node dysfunction and atrial fibrillation. - Ikeda, Shota; Nogami, Akihiko; Inoue, Kosuke; Kowase, Shinya; Kurosaki, Kenji; Mukai, Yasushi; Tsutsui, Hiroyuki (Journal of Cardiovascular Electrophysiology, 2020)