Funding for this research was provided by:
National Natural Science Foundation of China (81372333)
Major Scientific and Technological Innovation Project of Shandong Province (2018CXGC1212)
Science and Technology Foundation of Shandong Province (2014GSF118084), 2016GSF121043)
Medical and Health Technology Innovation Plan of Ji'nan City (201805002)
Received: 18 January 2019
Accepted: 14 September 2019
First Online: 27 September 2019
Ethics approval and consent to participate
: Consent for participation from all patients was obtained through The Cancer Genome Atlas Project.
: Not applicable.
: The authors declare that they have no competing interests.