Funding for this research was provided by:
Natural Science Foundation of China (81670903)
Capital Health Research and Development of Special Fund (2018-2-2065)
Beijing Key Laboratory of upper airway dysfunction related cardiovascular diseases (BZ0377)
Beijing Hospitals Authority Youth Programme (QML20190617)
Article History
Received: 18 April 2020
Accepted: 14 August 2020
First Online: 18 August 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.