Funding for this research was provided by:
National Natural Science Foundation of China (21876176)
Article History
Received: 15 March 2021
Revised: 13 April 2021
Accepted: 22 April 2021
First Online: 4 May 2021
Declarations
:
: This study was approved by the Ethical Committee of the Hefei Institutes of Physical Science, Chinese Academy of Science. All participants know the breath test very well and gave their informed consent.
: The authors declare no competing interests.