Funding for this research was provided by:
Liaoning Science and Technology Innovation Fund (201102134)
Text and Data Mining valid from 2019-11-20
Received: 12 August 2019
Accepted: 11 November 2019
First Online: 20 November 2019
Ethics approval and consent to participate
: The present study was approved by the Ethics Committee of The First Affiliated Hospital of Jinzhou Medical University. The research has been carried out in accordance with the World Medical Association Declaration of Helsinki. All patients provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.