Funding for this research was provided by:
Ministry of Science and Technology of the People's Republic of China (2017YFB1300301)
Ministry of Health of the People's Republic of China (2016-I2M-2-006)
Tianjin Science and Technology Committee (18JCYBJC29600)
Received: 13 January 2019
Accepted: 23 July 2019
First Online: 1 August 2019
Consent for publication
: Each participant agreed that the acquired data can be further scientifically used and evaluated. For publication, we madesure that no individual can be identified.
: The authors declare that they have no competing interests.