Li, Dan
Zhong, Chenhan
Tang, Xiujun
Yu, Linzhen
Ding, Kefeng
Yuan, Ying http://orcid.org/0000-0002-3922-9553
Funding for this research was provided by:
Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-Year Plan Period (2014BAI09B07)
National Key R&D Program of China (2017YFC0908200)
Article History
Received: 8 January 2018
Accepted: 15 February 2018
First Online: 19 February 2018
Compliance with ethical standards
:
: Author Dan Li declares that he has no conflict of interest. Author Chenhan Zhong declares that she has no conflict of interest. Author Xiujun Tang declares that she has no conflict of interest. Author Linzhen Yu declares that she has no conflict of interest. Author Kefeng Ding declares that he has no conflict of interest. Author Ying Yuan declares that she has no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: No ethics approval was sought for this study by authors as data used were the National Cancer Institute’s Surveillance, Epidemiology, and End Result (SEER) database, which is a publicly available de-identified population-based database.