L. Guy and M. Emilie, Jacqueline DELOUMEAUX (Registre général des cancers de la Guadeloupe), Marc COLONNA (Registre général des cancers de l'Isère), Michel VELTEN (Registre général des cancers du Bas-Rhin), Tania D'ALMEIDA (Registre général des cancers en région Limousin), Anne-Valérie GUIZARD (Registre général des tumeurs du Calvados), Jacqueline CLAVEL (Registre national des hémopathies malignes de l'enfant (RNHME)), Brigitte LACOUR (Registre national des tumeurs solides de l'enfant (RNTSE)), Isabelle BALDI (Registre des tumeurs primitives du système nerveux en Gironde), Jean-Baptiste NOUSBBAUM (Registre Finistérien des tumeurs digestives), Gaëlle COUREAU (Registre général des cancers de la Gironde)

, Ethical approval and consent to participate The study protocol was approved by French ethical committees, the Comité Consultatif Sur le Traitement de l'Information, and Commission Nationale de l

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