Xie, Jian-Feng
Zhang, Yan-Hua
Zhao, Lin
Xiu, Wen-Qiong
Chen, Hong-Bin
Lin, Qi
Weng, Yu-Wei
Zheng, Kui-Cheng http://orcid.org/0000-0003-1506-988X
Article History
First Online: 24 May 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the ethics committees of Fujian Provincial Center for Disease Control and Prevention. All participants provided written informed consent. Written consents were obtained from all participants involved in the study.