Niu, Qingyu
Zhao, Huiping http://orcid.org/0000-0002-2048-9072
Wu, Bei
Tsai, Shihming
Wu, Jian
Zhang, Meng
Lu, Lixia
Qiao, Jie
Men, Chuncui
Zuo, Li
Wang, Mei
Funding for this research was provided by:
Chinese Scholars, Ministry of Human Resources and Social Security (no)
Beijing Municipal Science and Technology Commission Capital Citizen Health Project (Z161100000116070)
Article History
Received: 30 April 2019
Accepted: 15 October 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Peking University People’s Hospital (ethical approval number: 2018PHB149). As this study was a retrospective observational cohort study without any intervention, informed consent was exempted by the Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.