• 1
    Gilbertson SR, Kurzman ID, Zachrau RE, et al. Canine mammary epithelial neoplasms: Biologic implications of morphologic characteristics assessed in 232 dogs. Vet Pathol 1983;20:127142.
  • 2
    Brodey RS, Goldschmidt MA, Roszel JR. Canine mammary gland neoplasms. J Am Anim Hosp Assoc 1983;19:6190.
  • 3
    Martin PM, Cotard M., Mialot JP, et al. Animal models for hormone-dependent human breast cancer. Cancer Chemother Pharmcol 1984;2:1317.
  • 4
    Sartin EA, Barnes S., Kwapien RP, et al. Estrogen and progres-terone receptor status of mammary carcinomas and correlation with clinical outcome. Am J Vet Res 1992; 53:21962200.
  • 5
    Schneider R., Dorn CR, Taylor DON. Factors influencing mammary cancer development and postsurgical survival. J Natl Cancer Inst 1969;43:12491261.
  • 6
    Allen SW, Mahaffey EA. Canine mammary neoplasia: Prognostic indicators and response to surgical therapy. J Am Anim Hosp Assoc 1989;25:540546.
  • 7
    Host H., Lund E. Age as a prognostic factor in breast cancer. Cancer 1986;57:22172221.
  • 8
    Bernstein L., Ross RK. Endogenous hormones and breast cancer risk. Epidemiol Rev 1993;15:4865.
  • 9
    Hulka BS, Edison TL, Lininger RA. Steroid hormones and risk of breast cancer. Cancer 1994;74(Suppl):11111124.
  • 10
    Harris J., Morrow M., Norton L. Malignant tumors of the breast. In: DeVitaVT, HellmanS., RosenbergSA, eds. Cancer: Principles and Practice of Oncology, 5th ed. Philadelphia , PA : JN Lippincott; 1997: 15571616.
  • 11
    Rutteman GR. Mammary tumors in the dog. In: BonaguraJD, ed. Kirk's Current Veterinary Therapy XII. Philadelphia , PA : WB Saunders; 1995: 518522.
  • 12
    Yamagami T., Kobayashi T., Takahashi K., Sugiyama M. Influence of ovariohysterectomy at the time of mastectomy on the prognosis for canine malignant mammary gland tumors. J Small Anim Pract 1996;37:462464.
  • 13
    Sorenmo K., Shofer F., Goldschmidt M. Effect of spaying and timing of spaying on survival of dogs with mammary carcinoma. J Vet Intern Med 2000;14:266270.
  • 14
    Stoll BA. Teenage obesity in relation to breast cancer risk. Int J Obes Relat Metab Disord 1998;22:10351040.
  • 15
    Toniolo PG, Levita M., Zeleniuch-Jacquotte A., et al. A prospective study of endogenous estrogens and breast cancer in postmen-opausal women. J Natl Cancer Inst 1995;87:190197.
  • 16
    Moore JW, Key TJA, Bulbrook RD, et al. Sex hormone binding globulin and risk factors for breast cancer in a normal population of women who had never used exogenous sex hormones. Br J Cancer 1987;56:661666.
  • 17
    Perez Alenza D., Rutteman GR, Pena L., et al. Relation between habitual diet and canine mammary tumors in a case-control study. J Vet Intern Med 1998;12:132139.
  • 18
    Shofer FS, Sonnenschein EG, Goldschmidt MH, et al. Histo-pathologic and dietary prognostic factors for canine mammary carcinoma. Breast Cancer Res Treat 1989;13:4960.
  • 19
    Patronek GJ, Waters DJ, Glickman LT. Comparative longevity of pet dogs and humans: Implications for gerontology research. J Gerontol A Biol Sci Med Sci 1997;52:171178.
  • 20
    Waters DJ, Patronek GJ, Bostwick DG, Glickman LT. Comparing the age of prostate cancer diagnosis in humans and dogs. J Natl Cancer Inst 1996;88:16861687.
  • 21
    Sonnenschein EG, Glickman LT, Goldschmidt MH, McKee LJ. Body condition, diet, and risk of breast cancer in pet dogs: A case control study. Anim J Epidemiol 1991;133:694703.
  • 22
    SAS Institute. The LIFETEST procedure. In: SAS/STAT User's Guide, Version 8, Vol 2. Cary , NC : SAS Institute; 1999: 17971852.
  • 23
    SAS Institute. The NPAR1WAY procedure. In: SAS/STAT User's Guide, Version 8, Vol 2. Cary , NC : SAS Institute; 1999: 25052552.
  • 24
    SAS Institute. The PHREG procedure. In: SAS/STAT User's Guide, Version 8, Vol 2. Cary , NC : SAS Institute; 1999: 25692658.