RT Journal Article SR Electronic T1 Wide QRS complex rhythm with pulseless electrical activity JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 81 OP 82 DO 10.3949/ccjm.81a.13079 VO 81 IS 2 A1 Littmann, Laszlo YR 2014 UL http://www.ccjm.org/content/81/2/81.abstract AB