Text and Data Mining valid from 2019-05-01
Received: 25 October 2018
Accepted: 21 March 2019
First Online: 8 May 2019
Compliance with ethical standards
: Hang Li, Bo Zhang, Meng Ding, Shang Lu, Hui Zhou, Dajun Sun, Gang Wu and Xianfeng Gan declare that they have no competing interests.
: All procedures performed in studies involving animal participants were in accordance with the ethical standards of China-Japan Union Hospital, Jilin University. The entire study was approved by the China-Japan Union Hospital, Jilin University.
: Informed consent was collected from patients to approve utilization of their tissues for research purposes.