Wang, Yuxi
Lei, Hong
Zhang, Yuxiang
Yang, Qiwen
Wang, Yu
Wang, Jiaxing
Xu, Cheng
Yu, Jinggang
Zhou, Lili
Kang, Xiaoni
Cui, Lei
Article History
Received: 14 March 2018
Accepted: 1 May 2018
First Online: 21 May 2018
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics committee board of 309th hospital of people of liberation army, and the need for individual patient consent was waived (reference number: 309201803130912).
: The authors declare that they have no competing interests
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.