Funding for this research was provided by:
Ministry of Human Resources and Social Security (A201903007)
Received: 17 November 2020
Accepted: 25 January 2021
First Online: 5 February 2021
Ethics approval and consent to participate
: This study was approved by the ethics committee of the 3rd Hospital of Hebei Medical University. Informed consent was obtained from all the participants.
: Written informed consent was obtained from each patient to authorize the publication of their data.
: The authors declare that they have no competing interests.