Received: 18 July 2018
Accepted: 5 June 2019
First Online: 13 June 2019
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of Nanjing Medical University and written informed consent was obtained from all patients. All the animal experiments were approved by the Nanjing Medical University (NJMU) Institutional Animal Care and Use Committee.
: Not applicable.
: The authors declare that they have no competing interests.