Funding for this research was provided by:
Shandong province medical and health science and technology development project (2017WS170)
Municipal Science and Technology Development Program of Weifang (2020YX035, 2020YX088)
Received: 22 March 2021
Accepted: 31 May 2021
First Online: 10 June 2021
: The study protocols were approved by the Medical Ethics Committee of Affiliated Hospital of Weifang Medical University.
: All authors consent for the publication of this manuscript.
: The authors declare that they have no competing interests.