1. Department of Public Health Sciences, Clemson University, Clemson, SC, USA
2. Department of Health Policy and Management, University of California Los Angeles, Los Angeles, CA, USA
3. Department of Physical Education, Shanghai University of Finance and Economics, Shanghai, China
4. Health Policy and Management, Fudan University, Shanghai, China
5. Department of Biological Sciences, Clemson University, Clemson, SC, USA
6. Department of Pediatrics, Wenzhou Medical University, Wenzhou, China