Liu, Zhidong
Wang, Shuzi
Zhang, Ying
Xiang, Jianjun
Tong, Michael Xiaoliang
Gao, Qi
Zhang, Yiwen
Sun, Shuyue
Liu, Qiyong
Jiang, Baofa
Bi, Peng
Funding for this research was provided by:
Ministry of Science and Technology of the People's Republic of China (2017FY101202, 2012CB955502)
Article History
Received: 26 December 2019
Accepted: 16 December 2020
First Online: 4 January 2021
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: Ethical approval for analysis of this de-identified data was granted by the Ethics Review Committee, School of Public Health, Shandong University (20120501).
: Not applicable