About the Authors

Hui Xing

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, and National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Xia Wang

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, and National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Lingjie Liao

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, and National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Yanling Ma

Affiliation Yunnan Center for Disease Control and Prevention, Kunming, China

Bin Su

Affiliation Anhui Center for Disease Control and Prevention, Hefei, China

Jihua Fu

Affiliation Shandong Center for Disease Control and Prevention, Jinan, China

Jianmei He

Affiliation Hunan Center for Disease Control and Prevention, Changcha, China

Lin Chen

Affiliation Shenzheng Center for Disease Control and Prevention, Shenzheng, China

Xiaohong Pan

Affiliation Zhejiang Center for Disease Control and Prevention, Hangzhou, China

Yonghui Dong

Affiliation Xinjiang Center for Disease Control and Prevention, Urumqi, China

Wei Liu

Affiliation Guangxi Center for Disease Control and Prevention, Nanning, China

Jenny H. Hsi

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, and National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Liting Yang

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, and National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Yuhua Ruan

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, and National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Yiming Shao

yshao08@gmail.com

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, and National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the survey and experiment: HX YR YS. Participated in designing the survey and performed the survey within their own provinces: YM BS JF JH LC XP YD WL. Revised the paper and gave suggestions to revise the paper: JHH. Data collection and management: LY. Performed the experiments: LL. Analyzed the data: XW. Wrote the paper: XW.