1. School of Management and Economics, Beijing Institute of Technology, Beijing, China
2. Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
3. School of Management Engineering, Zhengzhou University, Zhengzhou, Henan, China
4. Henan Telemedicine Center of China, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China