1. Cardiac Electrophysiology Research and Training Center, Faculty of Medicine Chiang Mai University Chiang Mai Thailand
2. Center of Excellence in Cardiac Electrophysiology Research Chiang Mai University Chiang Mai Thailand
3. School of Biological Sciences, Faculty of Biology, Medicine and Health The University of Manchester Manchester England
4. Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine Chiang Mai University Chiang Mai Thailand
5. Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry Chiang Mai University Chiang Mai Thailand