Zhao, Miaomiao
Liu, Baohua
Zheng, Tong
Xu, Jiao
Hao, Yanhua
Wang, Jiahui
Zhang, Xin
Nie, Wanling
Wang, Chao
Wang, Fuxiang
Jiao, Mingli
Wu, Qunhong
Liang, Libo
Funding for this research was provided by:
Think Tank of Public Health Security and Health Reform of Heilongjiang Province (ZKWT1012)
Article History
Received: 17 January 2019
Accepted: 21 August 2019
First Online: 29 August 2019
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of Harbin Medical University. Participants gave their written informed consent to confirm their involvement prior to data collection.
: Not applicable.
: The authors declare that they have no competing interests.