Heart failure in patients with sick sinus syndrome treated with single lead atrial or dual-chamber pacing: no association with pacing mode or right ventricular pacing site

Sam Riahi, Jens Cosedis Nielsen, Søren Hjortshøj, Poul Erik B Thomsen, Søren Højberg, Mogens Møller, Dorthe Dalsgaard, Tonny Nielsen, Mogens Asklund, Elsebeth V Friis, Per Dahl Christensen, E. H. Simonsen, Ulrik H Eriksen, G. V. Jensen, Jesper H Svendsen, William D Toff, Jeffrey S Healey, Henning R Andersen, on behalf of the DANPACE Investigators