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Zhang J, Dhakal I, Yan H, Phillips M, Kesteloot H; SEER Cancer Registries.Zhang J, et al.Ann Oncol. 2007 Jul;18(7):1268-79. doi: 10.1093/annonc/mdm123. Epub 2007 May 7.Ann Oncol. 2007.PMID: 17488731Free article.