Funding for this research was provided by:
National Natural Science Foundation of China (81541139)
Peking University People’s Hospital (RD 2016-14)
Received: 21 April 2020
Accepted: 5 November 2020
First Online: 19 November 2020
Ethics approval and consent to participate
: The study protocol was in accordance with the Declaration of Helsinki and was approved by the ethics committees of the Peking University People’s Hospital (PKUPH, IRB No. 2016PHB100-01). We explained the details of our study to each subject and written informed consent was obtained from all participants prior to their inclusion in the study. Nasal samples and medical data were collected and analyzed anonymously.
: Not applicable.
: The authors declare that they have no competing interests.