Shang, Jing-Ye
Zhang, Guang-Jia
Liao, Sha
Huang, Yan http://orcid.org/0000-0001-5670-2253
Yu, Wen-Jie
He, Wei
Yang, Guang-You
Li, Tiao-Ying
Chen, Xing-Wang
Zhong, Bo
Wang, Qian
Wang, Qi
Li, Rui-Rui
Wang, Hao
Funding for this research was provided by:
Health and Family Planning Commission of Sichuan Province (17PJ440)
Article History
Received: 23 April 2019
Accepted: 19 July 2019
First Online: 30 July 2019
Ethics approval and consent to participate
: The study was approved by the Ethical Committee of Sichuan Provincial Center for Diseases Control and Prevention.
: Not applicable.
: The authors declare that they have no competing interests.