2[2]Devesa SS,Blot WJ,Stone BJ,et al.Recent cancer trends in the united states.J Natl Cancer Inst,1995,87:175
3[3]Howe HL,Wingo PA,Thun MJ,et al.Annual report to the nation on the status of cancer(1973 through 1998),featuring Cancers with recent increasing trends.J Natl Cancer Inst,2001,93:824
4[4]Jemal A,Siegel R,Ward E,et al.Cancer statistics,2006.CA Cancer J Clin,2006,56:106
5[5]Westin EH,Longo DL.Lymphoma and myeloma in older patients.Semin Oncol,2004,31:198
6[6]The Non-Hodgkin's Lymphoma Classification Project.Effect of age on the characteristics and clinical behavior of non-Hodgkin's lymphoma patients.Ann Oncol,1997,8:973
7[8]Van Spronsen DJ,Janssen-Heijnen ML,Breed WP,et al.Prevalence of co-morbidity and its relationship to treatment among unselected patients with Hodgkin's disease and non-Hedgkin's lymphoma,1993-1996.Ann Hematol,1999,78:315
8[9]Lichtman SM.Chemotherapy in the elderly.Semin Oncol,2004,31:169
9[10]Dixon DO,Neilan B,Jones SE,et al.Effect of age on therapeutic outcome in advanced diffuse histiocytic lympholna:The Southwest Oncology Group experience.J Clin Oneol,1986,4:295
10[11]Coiffier B.Treatment paradigms in aggressive non-Hodgkin's lymphonla in elderly patients.Clin Lymphoma,2002,3:S12
