Document is current

Article History

Received: 10 May 2018

Accepted: 10 September 2018

First Online: 3 October 2018

Ethics approval and consent to participate

: The Clinical Research Ethics Committee of Affiliated Cancer Hospital of Zhengzhou University approved the research protocols.

: All patients signed the consent forms.

: The authors declare that they have no competing interests.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.