1. Department of Emergency Medicine Faculty of Medicine Chiang Mai University Chiang Mai Thailand
2. Cardiac Electrophysiology Research and Training Center Faculty of Medicine Chiang Mai University Chiang Mai Thailand
3. Center of Excellence in Cardiac Electrophysiology Research Chiang Mai University Chiang Mai Thailand
4. Cardiac Electrophysiology Unit Department of Physiology Faculty of Medicine Chiang Mai University Chiang Mai Thailand