Xu, Min
Wang, Wen-hua
Zhu, Sheng-qiang
Tan, Wei-guo
Jin, Xue-gang
Lu, Wei
Chen, Long
Article History
Received: 13 February 2018
Accepted: 19 March 2018
First Online: 5 April 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 our institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.