Funding for this research was provided by:
National Natural Science Foundation of China (31571304)
Yunnan Basic Research Program Key Project (2018FA010)
Received: 5 December 2019
Accepted: 20 February 2020
First Online: 28 February 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Institute of Medical Biology Chinese Academy of Medical Sciences, and signed informed consent from all study subjects was obtained.
: Not Applicable.
: The authors declare that they have no competing interests.