Zhu, Hong-Ting
Yu, Min
Hu, Hao
He, Qing-Fang
Pan, Jin
Hu, Ru-Ying
Funding for this research was provided by:
Ministry of Science and Technology (2016YFC0901200, and 2016YFC0901205)
Science Technology Department of Zhejiang Province (2017C33090)
Article History
Received: 21 December 2018
Accepted: 24 May 2019
First Online: 6 June 2019
Ethics approval and consent to participate
: The procedure of this investigation, including the form of consent, is in accordance with the principles of the Declaration of Helsinki and approved by internal ethical review board of Zhejiang Provincial Center for Disease Control and Prevention, followed by acquiring written informed consent from all participants.
: Not applicable.
: The authors declare that they have no competing interests.