Changing QRS morphology: what is the mechanism?
Haghjoo
Majid
M
Department of Pacemaker and Electrophysiology, Rajaie Cardiovascular Medical and Research Center, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. majid.haghjoo@gmail.com
Arya
Arash
A
Dehghani
Mohammad Reza
MR
Sadr-Ameli
Mohammad Ali
MA