Sun, Haili
Fang, Fang
Li, Kun
Zhang, Huina
Zhang, Ming
Zhang, Lichuan
Li, Juan
Qin, Yanwen
Wei, Yongxiang
Funding for this research was provided by:
National Natural Science Foundation of China (81870355)
Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support (ZYLX201605)
Beijing Medical Project (2016-4)
Article History
Received: 6 April 2019
Accepted: 24 July 2019
First Online: 20 August 2019
Ethics approval and consent to participate
: This study was cross-sectional study done in the sleep center (Beijing Anzhen Hospital, China). The study was approved by the ethics committee of Beijing Anzhen Hospital (appoval NO:2017005). All patients gave written informed consent to the ethically approved protocols.
: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.