Liu, Ying
Chi, Miaomiao
Wen, Hongling
Zhao, Li
Song, Yanyan
Liu, Na
Chi, Lianli
Wang, Zhiyu
Funding for this research was provided by:
National Natural Science Foundation of China (81672011, 81271806)
Fundamental search Funds of Shandong University (2015JC044)
Article History
Received: 5 April 2019
Accepted: 13 November 2019
First Online: 25 November 2019
Compliance with ethical standards
:
: All authors declare that they have no conflict of interest.
: Present paper does not contain any studies with human participants or animals performed by any of the authors. Ethics Committee of School of Public Health, Shandong University approved this study.
: Informed consent was obtained from all individual participants in the study.
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