1 Cardiology Division, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong SAR, China; Cardiology Division, Department of Medicine, The University of Hong Kong ShenZhen Hospital, Shenzhen, China.
2 Cardiology Division, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong SAR, China; Cardiology Division, Department of Medicine, The University of Hong Kong ShenZhen Hospital, Shenzhen, China. Electronic address: hftse@hku.hk.