Funding for this research was provided by:
National Natural Science Foundation of China (81672201)
China Postdoctoral Science Foundation (2019M650771)
Received: 30 June 2019
Accepted: 20 November 2019
First Online: 12 December 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee for Human Subjects of the Peking University Third Hospital. Informed consent was provided by all participating individuals.
: Not applicable.
: The authors declare that they have no competing interests.