Article History
Received: 24 October 2020
Accepted: 19 May 2021
First Online: 25 June 2021
Declarations
:
: Informed consent was obtained from all individual participants included in the study. All producers were approved by the Ethics Committee of Qingdao Jiaozhou Central Hospital.
: Not applicable.
: All authors have no conflicts of interest.We declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.