Liu, Shuzheng
Guo, Lanwei
Chen, Qiong
Yu, Liang
Li, Bianyun
Cao, Xiaoqin
Sun, Xibin
Article History
Received: 28 August 2017
Accepted: 26 September 2018
First Online: 3 October 2018
Ethics approval and consent to participate
: The dataset of the population-based cancer registry is registered as stipulated by the regulation of Methods of Cancer Registration Management according to National Health Commission of the People’s Republic of China (ExternalRef removed). All data collected in the database for the survival analysis were anonymous, and no ethical approval was required.
: Not applicable.
: The authors declare that they have no competing interests.
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