Gong, Fengqiu
Ding, Liying
Chen, Xiaojun
Yao, Dianye
Wu, Yaoye
Xie, Lihong
Ouyang, Qiuyi
Wang, Ping
Niu, Gang
Article History
Received: 6 March 2018
Accepted: 1 June 2018
First Online: 12 June 2018
Compliance with Ethical Standards
:
: 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 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.