Funding for this research was provided by:
National key research and development programs of China (2017YFC0113202)
Key research and development project in Shandong (2018GSF118048)
Text and Data Mining valid from 2018-08-10
Received: 22 February 2018
Accepted: 2 August 2018
First Online: 10 August 2018
: TY, YY and GGZ are members of Shandong Cancer Hospital Affiliated to Shandong University, Jinan, China.CPJ is members of School of Nuclear Science and Technology, University of South China, Hengyang, China.
: This study was approved by the Research Ethics Board of the Shandong Cancer Hospital, and informed consent was obtained from all the patients.
: 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.