Sun, Jiyao
Zhang, Nan
Yan, Xiaona
Wang, Meng
Wang, Jian
Funding for this research was provided by:
Social Science Planning and Research Project of Shandong Province (19CZKJ02)
Health Industry Research Project on Medical and Health Care of Shandong University (19SDUY01)
Article History
First Online: 11 March 2020
Compliance with ethical standards
:
: The authors declared no conflict of interest.
: Data were collected from published literatures rather than human subjects. No personal private information was included.