Funding for this research was provided by:
Project Agreement for Science & Technology Development (20190304027YY)
Received: 24 February 2020
Revised: 18 May 2020
Accepted: 25 May 2020
First Online: 9 June 2020
Ethics approval and consent to participate
: The use of human tissue was approved by the ethics committee of the First Hospital of Jilin University, China (EK Nr. 985/2016, 25 January 2018), and the donor gave written consent.
: Not applicable
: The authors declare that they have no competing interests.