Article History
Received: 28 August 2019
Accepted: 9 December 2019
First Online: 19 December 2019
Ethics approval and consent to participate
: This clinical trial was approved by Ethics Committee of the First Affiliated Hospital of the Dalian Medical University on January 24, 2019 (protocol number: PJ-KY-2018-141(X)). All the participants provided written informed consent following principles of the Helsinki Declaration.
: Not applicable.
: The authors declare that they have no competing interests.