Chen, Jian-Xian
Zhang, Wen-Wen
Dong, Yong
Sun, Jia-Yuan
He, Zhen-Yu
Wu, San-Gang https://orcid.org/0000-0001-6125-2680
Funding for this research was provided by:
Natural Science Foundation of Fujian Province (2016J01635)
Science and Technology Planning Projects of Xiamen Science & Technology Bureau (3502Z20174070)
Natural Science Foundation of China (81872459, 81803050)
Article History
Received: 18 July 2018
Accepted: 7 November 2018
First Online: 20 November 2018
Ethics approval and consent to participate
: This study was based on the publicly available SEER database and we have got the permission to access them on purpose of research only (Reference number: 11025-Nov2016). As the SEER database consists of de-identified information, the study was exempt from the approval process of Institutional Review Boards of the First Affiliated Hospital of Xiamen University.
: Not applicable.
: The authors declare that they have no competing interests.
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