Received: 28 February 2020
Accepted: 17 August 2020
First Online: 4 September 2020
Ethics approval and consent to participate
: The present study was approved by the Ethics Committee of The First People’s Hospital of Shangqiu. The research has been carried out in accordance with the World Medical Association Declaration of Helsinki. All patients provided written informed consent prior to their inclusion within the study.
: Not applicable.
: The authors declare that they have no competing interests.