Funding for this research was provided by:
National Natural Science Foundation of China (41572004)
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (200021_160019)
Text and Data Mining valid from 2020-01-02
Received: 3 May 2019
Accepted: 27 November 2019
First Online: 2 January 2020
Compliance with ethical standards
: The authors declare that they have no competing interests.
: Informed consent was obtained from all individual participants included in the study.