Funding for this research was provided by:
Institut National Du Cancer (0612-3D1514-14)
Ligue Contre le Cancer
Text and Data Mining valid from 2018-11-12
Received: 7 September 2017
Accepted: 28 October 2018
First Online: 12 November 2018
Ethics approval and consent to participate
: This study is based on data from cancer registries gathered in the French network of cancer registries and a representative of each registry was involved in the study and approved the use of its data. Ethics approval and consent to participate were not required for this study.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.