Funding for this research was provided by:
Krebsforschung Schweiz (KFS-4694-02-2019, KFS-4265-08-2017)
China Scholarship Council
Bernische Krebsliga (20171008)
Changsha University of Science and Technology (kq1801110)
Received: 1 October 2020
Accepted: 6 April 2021
First Online: 19 April 2021
: This study was approved by the Cantonal Ethics Committee of Bern, Switzerland, and has been performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare no competing interests.