Received: 19 December 2019
Revised: 18 June 2020
Accepted: 7 August 2020
First Online: 30 September 2020
Ethics approval and consent to participate
: Study protocols were approved by the Ethics Committee of China-Japan Union Hospital of Jilin University and based on the ethical principles for medical research involving human subjects of the <i>Declaration of Helsinki</i>. The animal experiments were performed in strict accordance with the recommendations in the Guide for the Care and Use of Laboratory Animals of the National Institutes of Health. Animal experiments were conducted after measures were taken to minimize the number, pain and suffering of experimental animals.
: Not applicable.
: The authors declare that they have no competing interests.