Text and Data Mining valid from 2018-08-06
Received: 13 November 2017
Accepted: 26 July 2018
First Online: 6 August 2018
Ethics approval and consent to participate
: Not applicable. All the data were obtained from the global statistics of GLOBOCAN (ExternalRef removed). This is a study of analytic epidemiology, and we did not perform any intervention on human participants. We confirm that this study complies with national guidelines (ExternalRef removed).
: Not applicable.
: The authors declare that they have no competing interests.
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