1US Cancer Statistics Working Group. United States Cancer Statistics: ~ 1999 - 2006 incidence and mortality web - based report [ EB/OL ]. Atlanta, GA: Department of Health and Human Services, Centers for Disease Control and Prevention, and National Cancer Institute,2010 [ 2012 - 03 - 26 ]. http ://cdc. gov/uscs.
2Taba L, Duffy S W, Vitak B, et al. The natural history of breast carcinoma: What have we learned from screening [ J ]? Cancer, 1999,86 ( 3 ) :449 -462.