Atrial fibrillation in patients with sick sinus syndrome: the association with PQ-interval and percentage of ventricular pacing

Jens Cosedis Nielsen, Poul Erik B Thomsen, Søren Højberg, Mogens Møller, Sam Riahi, Dorthe Dalsgaard, Leif Mortensen, Tonny Nielsen, Mogens Asklund, Elsebeth V Friis, Per Christensen, Paul Erik Simonsen, Ulrik H Eriksen, Gunnar Jensen, Jesper H Svendsen, William D Toff, Jeffrey S Healey, Henning Rud Andersen, on behalf of the DANPACE investigators