Hai Afroz A, Kalinchak David M, Schoenfeld Mark H
Cardiac Electrophysiology and Pacemaker Laboratory, Hospital of Saint Raphael, Yale University School of Medicine, New Haven, Connecticut, USA.
Pacing Clin Electrophysiol. 2009 Dec;32(12):1587-90. doi: 10.1111/j.1540-8159.2009.02541.x. Epub 2009 Sep 16.