1. Key Laboratory of Medical Electrophysiology, Ministry of Education, Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
2. Key Laboratory of Medical Electrophysiology, Ministry of Education, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
3. Department of Basic Medical Sciences, College of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan 646000, P.R. China