1. Department of Cardiology, The First Affiliated Hospital, China Medical University, Shenyang, PR China;
2. Department of Cardiology, West China Hospital, Sichuan University, Chengdu, PR China;
3. Department of Cardiology, Fuling Central Hospital, Chongqing, PR China;
4. Department of Neurology, The First Affiliated Hospital, China Medical University, Shenyang, PR China