Article History
Received: 7 June 2019
Accepted: 18 August 2019
First Online: 23 August 2019
Ethics approval and consent to participate
: This study protocol was approved by the Institutional Research Ethics Committee of The First People’s Hospital of Hefei (No. 2016–6) and was registered in the Chinese Clinical Trial Registry (ExternalRef removed, ChiCTR-IPR-17011462). Written informed consent was obtained from all patients.
: Not applicable.
: The authors declare that they have no competing interests.