QRS duration predicts death and hospitalization among patients with atrial fibrillation irrespective of heart failure: evidence from the AFFIRM study.
Whitbeck MG, Charnigo RJ, Shah J, Morales G, Leung SW, Fornwalt B, Bailey AL, Ziada K, Sorrell VL, Zegarra MM, Thompson J, Hosn NA, Campbell CL, Gurley J, Anaya P, Booth DC, Di Biase L, Natale A, Smyth S, Moliterno DJ, Elayi CS. QRS duration predicts death and hospitalization among patients with atrial fibrillation irrespective of heart failure: evidence from the AFFIRM study. Europace. 2014 Jun; 16(6):803-11.