Funding for this research was provided by:
Young Scientists Fund (81502195)
Received: 10 March 2020
Accepted: 10 November 2020
First Online: 16 November 2020
Ethics approval and consent to participate
: The study protocol was approved by the ethics committee at The Affiliated Hospital of Qingdao University. All patients involved in the present study provided signed informed consent.
: Not applicable.
: None declared.