Text and Data Mining valid from 2020-03-23
Received: 31 May 2019
Revised: 5 January 2020
Accepted: 10 March 2020
First Online: 23 March 2020
Ethics approval and consent to participate
: The experimental protocol about animals was approved by the Ethical Committee and the Institutional Animal Care and Use Committee of Qilu Hospital of Shandong University. The collection and use of human tissue was approved by the Ethical Committee of Qilu Hospital of Shandong University.
: Not applicable.
: The authors declare that they have no competing interests.