Funding for this research was provided by:
National Natural Science Foundation of China (81672201 and 81871794)
Received: 31 December 2018
Accepted: 6 August 2019
First Online: 20 August 2019
Ethics approval and consent to participate
: This study was approved by the Ethical committee of Beijing Xuanwu Hospital (clinical research NO. 050). Each participate ethics had a written approval and consent.
: Not applicable.
: The authors declare that they have no competing interests.