1. Yavari P, Abadi A, Mehrabi Y. Mortality and changing epidemiological trends in Iran during 1979-2001. Ha-kim Research Journal. 2003;6(3):7-14. In Persian
2. Kolahdoozan S, Sadjadi A,Radmehr AR, Khademi, Hooman. Five Common Cancers in Iran. Teheran, IRAN, REPUBLIQUE ISLAMIQUE D': Academy of Medical Sciences of I.R. Iran; 2010.
3. Bayer T, Grahan J, Rzepka T, al. e. Lactation and breast cancer:evidence for a negative association inpremeno-pausal women. Am J Epidemiol. 1985;121:664-74.
4. Ferlay J, Bray F, Pisani P, Parkin D. Cancer Incidence, Mortality and Prevalence Worldwide. IARCCancer-Base. 2004; p. 5.
5. De Vita VT, Hellman S, Rosenberg SA. Cancer; princi-ples and practice of oncology. 7th ed. PA: Lippincott Williams & Wilkins. 2008; pp:255,268,1617.
6. World Health Organization (WHO). [Online]. Available from: URL: http://www.who.int/en/
7. Center for Disease Control, Ministry of Health, Treat-ment and Medical Education. Country Reports Cancer Record 2001. Tehran: The Calak Publisher. Dirin. 2007.
8. Kuru B, Camlibel M, Dinc S, Gulcelik MA, Gonullu D, Alagol H. Prognostic factors for survival in breast can-cer patients who developed distant metastasis subse-quent to definitive surgery. Singapore Med J 2008; 49(11):904-11.
9. Welch DR, Harms JF, Mastro AM, Gay CV, Donahue HJ. Breast cancer metastasis to bone: evolving models and
esearch challenges. J Musculoskelet Neuronal Interact 2003;3(1):30-8.
10. Buzdar A. Found that survival rates for breast cancer patients increased significantly over that past six decades. In: 2010 Breast Cancer Symposium; Sep-tember 2010.
11. Osborne m, boolbol s. Disease of breast .philadelphia, lippincett Williams &wilkins,4th edition 2009;1-11,74-82.
12. Ziaie JA, Pourzand A, Bayat A, Vaez J. Patterns of merastasis and survival in breast cancer patients A preliminary study in Iranian population. Asian pacif-ic journal of cancer prevention. 2012;13:937-940.
13. Koenders PG, Beex LV, Kloppenborg PW, Smals AG, Benraad TJ. Human breast cancer: survival from first metastasis. Breast Cancer Res Treat. 1992;21(3):173-180.
14. TJokrowidjaja A, Lee CK, Houssami N, Lord S, Meta-static breast cancer in young women: a population- based cohort study to describe risk and prognosis. Internal Medicine Journal. 2014;44(8):764-70.
15. Akbri, Mirzai H, Surrey H. The 5 year survival rate of breast cancer patients admitted to Tajrish Shohada Hospital. Shahid Behashti University of Medi-calsciences, Department of Surgery and Radiather