Xue, Ye
Zhao, Rui
Du, Si-Hao
Zhao, Dong
Li, Dong-Ri
Xu, Jing-Tao
Xie, Xiao-Li
Wang, Qi
Funding for this research was provided by:
National Natural Science Foundation of China (81401556)
Guangdong Natural Science Foundation (2014A030310504, 2014A030310293)
Special Foundation of President of School of Public Health and Tropical Medicine of Southern Medical University (GW201402)
Article History
Received: 29 December 2015
Accepted: 25 February 2016
First Online: 14 March 2016
Compliance with ethical standards
: This work was approved by our institutional ethics committee.
: The authors declare that they have no conflict of interest.