Li, Jun
Zhang, Yan
Liu, Juanjuan
Shi, Qianzhu
Liu, Wen
Luo, Bing http://orcid.org/0000-0002-6541-5958
Funding for this research was provided by:
National Natural Science Foundation of China (NSFC 81571995)
Natural Science Foundation of Shandong Province (ZR2017BH106)
Article History
Received: 30 June 2020
Accepted: 29 December 2020
First Online: 1 March 2021
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the Medical Ethics Committee at the Medical College of Qingdao University and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.