Han, Xuemei
Zheng, Zhaoshi
Wang, Chunhui
Wang, Libo
Article History
Received: 19 May 2018
Accepted: 4 December 2018
First Online: 22 December 2018
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of the China-Japan Union Hospital of Jilin University. All patients agreed to participate in the study and signed the informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.