Qi, Wen-Hua
Jiang, Xue-Mei
Yan, Chao-Chao
Zhang, Wan-Qing
Xiao, Guo-Sheng
Yue, Bi-Song
Zhou, Cai-Quan
Funding for this research was provided by:
National Natural Science Foundation of China (NSFC31702032)
Chongqing Municipal Public Health Bureau, Chongqing People's Municipal Government (No.KJ1710239)
Article History
Received: 26 February 2018
Accepted: 4 September 2018
First Online: 26 September 2018
Competing Interests
: The authors declare no competing interests.