Funding for this research was provided by:
Young Scientists Fund (81801266)
Natural Science Foundation of Shandong Province (ZR2017BH064)
the Clinical Medicine+X Project Fund, Medical School of Qingdao University
Qilu hygiene and health leading talents cultivation project
Postdoctoral Research Foundation of China (2019M662305)
The Qingdao Postdoctoral Application Research Project
Article History
Received: 5 September 2019
Accepted: 29 August 2020
First Online: 7 September 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest.