1. Department of Cardiology, 252 Hospital of PLA, Baoding, Hebei 071000, China
2. Department of Cardiology, General Hospital of People’s Liberation Army, Beijing 100853, China
3. Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
4. State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin 300072, China
5. Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, Tianjin Polytechnic University, Tianjin 300387, China