6Califano J, Westra WH, Meininger G, et al. Genetic progression and clonal relationship of recurrent premalignant head and neck lesions [ J]. Clin Cancer Res,2000,6(2) :347-352.
7Beisland C, Talleraas O, Bakke A, et al. Multiple primary malignancies in patients with renal cell carcinoma: a national population-based cohort study [ J]. BJU Int, 2006,97 (4) : 698- 702.
8Mariotto AB, Rowland JH, Ries LA, et al. Multiple cancer prevalence: a growing challenge in long-term survivorship [J]. Cancer Epidemiol Biomarkers Prey,2007,16 (3) :566-571.
9Balat O,Kudelka AP,Ro JY,et al.Two synchronous primary tumors of the ovary and kidney:a case report.Eur J Gynaecol,1996,17:257-259.
10Hemminki K,Jiang Y,Steineck G.Skin cancer and non-Hodgkin's lymphoma as second malignancies.Markers of impaired immune function? Eur J Cancer,2003,39(2):223-229.
