Qiu, Lei
Yang, Qin
Sun, Na
Li, Dandan
Zhao, Yuxin
Li, Xiaotong
Gong, Yanhong
Lv, Chuanzhu
Yin, Xiaoxv
Funding for this research was provided by:
Philosophy and Social Science Foundation of Hainan Province (HNSK(ZC)17-16)
Hainan Medical University (HYP201715)
Article History
Received: 14 July 2018
Accepted: 25 September 2018
First Online: 17 October 2018
Ethics approval and consent to participate
: Not applicable.
: 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.