1. College of Management and Economics, Tianjin University, Tianjin, China
2. School of Management, Zhengzhou University, Zhengzhou, Henan, China
3. Department of Cardiac Rehabilitation, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan, China
4. Department of Cardiology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
5. School of Management, Zhejiang University, Hangzhou, Zhejiang, China