Leng, Song
Zhao, Ai
Li, Qiang
Pei, Leilei
Zheng, Wei
Liang, Rui
Yan, Hong
Funding for this research was provided by:
National Natural Science Foundation of Liaoning Province (NO.:20170540239)
Article History
Received: 28 June 2018
Accepted: 11 October 2018
First Online: 1 November 2018
Ethics approval and consent to participate
: This study was approved by the Medical Ethics Research Board of The Second Hospital of Dalian Medical University (No.IRB29). Written consent was obtained from the participants before the study began.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.