Li, Jingbo
Zhang, Yun
Zhang, Liulong
Lv, Deyong
Song, Hui
Zhang, Haifeng
Zhou, Guangyan
Li, Hong
Article History
Received: 21 November 2018
Accepted: 30 May 2019
First Online: 24 June 2019
Ethics approval and consent to participate
: All the operations in this study were informed and agreed by patients, family members and the ethics committee of our hospital.
: Not applicable.
: The authors declare that they have no competing interests.