Funding for this research was provided by:
Beijing science and technology commission science and technology planning project (Z191100009119013)
Beijing Health Bureau Program for High Level Talents (2014-3-017)
Beijing Municipal Science and Technology Project (Z181100001618002)
Received: 27 November 2020
Accepted: 3 May 2021
First Online: 22 May 2021
: The present study was approved by the Medical Ethics Committee of Beijing TongRen Hospital (TRECKY2020-076) and all patients provided written informed consent prior to any samples being taken for investigation.
: Not applicable.
: The authors declare that they have no competing interests.