Dr. Reza Mollazadeh is an associate professor of cardiology and interventional cardiac electrophysiologist working in the Tehran university of medical sciences. He also has private practice in Pars general hospital in Tehran, Iran. He has served on the board and committees of Iranian heart rhythm and Iranian atherosclerosis societies. He is the author of near 40 scientific papers. He has performed more than 1500 electrophysiology studies and ablations, more than 1300 device implantation and upgrades, more than 80 lead extractions and near 120 complex 3D ablations (including ischemic VT). Contact details: 1) Cardiology department, Imam Khomeini hospital, Keshavarz Blv, Tehran, Iran. 1419733141 2) Pars General hospital, Keshavarz Blvd, Tehran Iran 3) 2) 7th floor, Cardiology clinic, Medico plus center, Bakhshandegan Alley, Vali-e-Asr street, Tehran, Iran Mobile: +98 9127334136 Office: +98 2161192647 Fax: +98 2166939537 Email: mollazar@yahoo.com