Prevention of Atrioventricular Block During Radiofrequency Ablation by Pace Mapping of Koch’s Triangle - Namazi, Mohammad Hasan; Kamalzadeh, Hassan; Safi, Morteza; Karbasi Afshar, Reza; Motamedi, Mohammad Reza; Saadat, Habibollah; Vakili, Hossein (The Research in Heart Yield and Translational Medicine (RHYTHM))