Sun, Wei
Xue, Cheng
Tang, Xian-ye
Feng, Hu
Yuan, Feng
Guo, Kai-jin
Zhao, Jie http://orcid.org/0000-0002-2489-5932
Article History
Received: 18 July 2018
Accepted: 5 February 2019
First Online: 12 February 2019
Ethics approval and consent to participate
: Ethical approval was given by the medical ethics committee of the Affiliated Hospital of Xuzhou Medical University with the following reference number: xyfylw2012016.
: 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.