Received: 19 June 2020
Accepted: 15 December 2020
First Online: 11 February 2021
Compliance with Ethical Standards
: All authors declare no relevant conflict of interests.
: The human tissues utilized in the study were collected under the subject protocol approved by Institutional Review Boards of Rongcheng People’s Hospital of Shandong Province.
: Written informed consent was provided by each subject or subject’s guardian.
: The publication was approved by all the authors.