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Kvaskoff M, Bijon A, Mesrine S, Vilier A, Clavel-Chapelon F, Boutron-Ruault MC.Kvaskoff M, et al.Cancer Epidemiol. 2014 Aug;38(4):357-63. doi: 10.1016/j.canep.2014.05.008. Epub 2014 Jun 28.Cancer Epidemiol. 2014.PMID: 24986641
Touvier M, Kesse E, Clavel-Chapelon F, Boutron-Ruault MC.Touvier M, et al.J Natl Cancer Inst. 2005 Sep 21;97(18):1338-44. doi: 10.1093/jnci/dji276.J Natl Cancer Inst. 2005.PMID: 16174855Free PMC article.