Article History
Received: 8 May 2021
Revised: 3 September 2021
Accepted: 24 September 2021
First Online: 18 October 2021
Competing interests
: The authors declare no competing interests.
: The study protocols were approved by the Ethics Committee of The Affiliated Hospital of Qingdao University. Informed consent was obtained from all participants included in this study according to ethical committee regulations.