Li, Chunlin
Zhang, Lei
Zhou, Jin
Fan, Zhiliang
Wang, Yan
Wang, Xiaolin
Wang, Weidong
Yu, Shengyuan
Funding for this research was provided by:
National Natural Science Foundation of China (81671077)
National Natural Science Foundation of China (81600952)
Natural Science Foundation of Beijing Municipality (Z170002)
Article History
Received: 13 November 2019
Accepted: 10 March 2020
First Online: 5 April 2020
Ethics approval and consent to participate
: The study protocol was approved by the medical department of the 316th hospital of Chinese People’s Liberation Army and the Ethics Committee of General Hospital of the Chinese People’s Liberation Army. The project title is WK12/15.Written informed consent was gained from participants before enrolment. All participants received a detailed explanation about the purpose and content of the questionnaire. Personal data were completely anonymized during information collection, analysis and dissemination.
: Not applicable.
: The authors declare that they have no competing interests.