Zhang, Hongtao
Pan, Jingjing
Shen, Yanguang
Bai, Xu
Wang, Yingwei
Wang, Haiyi
Ye, Huiyi
Article History
First Online: 23 August 2018
Compliance with ethical standards
:
: This study was supported by National Natural Science Foundation of China (No. 81771785 and 81471641). The funders had no role in research design, data collection, and analysis, decision to publish, or preparation of the manuscript.
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.