Funding for this research was provided by:
National Natural Science Foundation of China (81802190, 81772412)
China Postdoctoral Science Foundation (2019M652329)
Shandong Medical and Health Technology Development Plan Project (2017WS033)
Youth Fund Project of the Affiliated Hospital of Qingdao University (2017)
Shandong Provincial Science Foundation, China (ZR2019BH084)
Taishan Scholars Program (tsqn201909190)
Applied Basic Research Project of Qingdao (19-6-2-51-cg)
Received: 5 May 2020
Accepted: 28 December 2020
First Online: 13 January 2021
Ethics approval and consent to participate
: This study was carried out following the Declaration of Helsinki and approved by the ethics committee of Affiliated Hospital of Qingdao University (QDFY WZ 2018-3-1-02). Written informed consent was obtained from all participants in this study.
: Not applicable.
: The authors declare that they have no competing interests.