1. Division of Cardiology, Xiangtan Central Hospital, Xiangtan, Hunan, China (mainland)
2. Division of Cardiology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
3. Division of Cardiology, Tongji Hospital Affiliated to Huazhong Technology, University Wuhan, Wuhan, Hubei, China (mainland)