Funding for this research was provided by:
Shijiazhuang Science and Technology Research and Development Plan (191460803)
Article History
Received: 22 September 2020
Accepted: 17 March 2021
First Online: 25 March 2021
Declarations
:
: The research protocol was approved by the institutional ethics committee of the fourth hospital of Shijiazhuang at Jun. 20, 2019 (No.20190051). All participants agreed to participate in this study and signed an informed consent form before sample collection.
: Not applicable.
: The authors declare that they have no competing interests.