Feng, You-Zhen
Chen, Xiao-Qiao
Yu, Juan
Liu, Xiao-Ling
Cheng, Zhong-Yuan
Ren, Wei-Wei
Feng, Lie
Cai, Xiang-Ran
Article History
First Online: 10 March 2018
Compliance with ethical standards
:
: This study was supported by the Guangdong Science and Technology project in China (Grant No. 2014A020212442).
: 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.
: Informed consent was obtained from all individual participants included in the study.