Funding for this research was provided by:
National Natural Science Foundation of China (31970868)
the CAMS (Chinese Academy of Medical Sciences) Initiative for Innovative Medicine (2016-I2M-1-019)
Major Projects and Key Research and Development Plans of Yunnan Province (2019ZF004)
the Natural Science Foundation of Yunnan Province (2016FA029)
Received: 8 January 2020
Accepted: 19 January 2021
First Online: 10 February 2021
Ethics approval and consent to participate
: Written informed consent was obtained from all participants. Each participant was informed of the purpose of the study, and written informed consent was obtained from parents or guardians if the participant was a child (under 16 years old). The study protocol was approved by the Institutional Ethics Committee (Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College).
: Not applicable.
: The authors declare that they have no competing interests.