References

  1. Parkin DM, Bray F, Ferlay J, Pisani P. Global cancer statistics, 2002. CA Cancer J Clin. 2005; 55(2): 74-108. PubMed | Google Scholar

  2. Ferlay J, Shin HR, Bray F, Forman D, Mathers C, Parkin DM. Estimates of worldwide burden of cancer in 2008: GLOBOCAN 2008. Int J Cancer. 2010; 127(12): 2893-917. PubMed | Google Scholar

  3. Thomas J, Ojemakinde O, Izebraye I. Current concepts in cervical carcinogenesis and new perspectives in prevention. Arch Ibadan Med. 2002; 3(1): 36-9. Google Scholar

  4. WHO/ICO HPV information centre on HPV and cervical cancer (HPV information centre). Human papilloma viruss and related cancers in Nigeria. Summary report 2010.

  5. Owoeye IOG, Ibrahim IA. Knowledge and attitude towards cervical cancer screening among female students and staff in a tertiary institution in the Niger Delta. Int J Med Biomed Res. 2013; 2(1): 48-56. Google Scholar

  6. Okonkwo CA, Amegor FO, Gbolade JO. Relationship between Trace Elements and Major Gynaecological Malignancies. Asian Journal of Medical Sciences. 2013; 5(6): 124-127.

  7. Gecit I, Kavak S, Demir H, Günes M, Pirinççi N, Çetin C et al. Serum Trace Element Levels in Patients with Bladder Cancer. Asian Pac J Cancer Prev. 2011; 12(12): 3409-13. PubMed | Google Scholar

  8. Martin-Lagos F, Navarro-Alarcon M, Terres-Martos C, Lopez-G de la Serrana H, Lopez-Martinez MC. Serum copper and zinc concentrations in serum from patients with cancer and cardiovascular disease. The Science of the Total Environment. 1997; 204(1): 27-35. PubMed | Google Scholar

  9. Goyal MM, Kalwar AK, Vyas RK, Bhati A. A study of serum zinc, selenium and copper levels in carcinoma of esophagus patients. Indian Journal of Clinical Biochemistry. 2006; 21(1): 208-210. PubMed | Google Scholar

  10. Zuo XL, Chen JM, Zhou X, Li XZ, Mei GY. Levels of selenium, zinc, copper and antioxidant enzyme activity in patients with leukemia. Biol Trace Elem Res. 2006; 114(1-3): 41-53. PubMed | Google Scholar

  11. Rink L, Haase H. Zinc homeostasis and immunity. Trends Immunol. 2007; 28(1): 1-4. PubMed | Google Scholar

  12. Cui H, Xi P, Junliang D, Debing V, Guang Y. Pathology of lymphoid organs in chickens fed a diet deficient in zinc. Avian Pathol. 2004; 33(5): 519-524. PubMed | Google Scholar

  13. Cavallo F, Gerber M, Marubini E, Richardson S, Barbieri A, Costa A et al. Zinc and copper in breast cancer: a joint study in northern Italy and southern France. Cancer. 1991; 67(3): 738-745. PubMed | Google Scholar

  14. Chakravarty PK, Ghosh A, Chowdhury JR. Plasma and erythrocyte copper level as an indicator of disease activity during malignancy. Cancer Lett. 1994; 84(2): 177-182. PubMed | Google Scholar

  15. Micke O, Schomburg L, Buentzel J, Kisters K, Muecke R. Selenium in oncology: from chemistry to clinics. Molecules. 2009; 14(10): 3975-3988. PubMed | Google Scholar

  16. Schomburg L, Koehrle J. Selenium: benefits and risks. MMW Fortschr Med. 2007; 149(8): 34-36. PubMed | Google Scholar

  17. Naidu MS, Suryakar AN, Swami SC, Katkam RV, Kumbar KM. Oxidative stress and anti-oxidant status in cervical cancer patients. Indian J Clin Biochem. 2007; 22(2): 140-144. PubMed | Google Scholar

  18. Wong WSF, Arumanayagam M, Chang MZA. Copper and zinc levels in patients with cervical neoplasia: clinical evaluation of the copper/zinc ratio. J Obstet Gynaecol. 1987; 8(1): 53-56. Google Scholar

  19. Thompson FE, Patterson BH, Weinstein SJ, McAdams M, Spate VL, Hamman RF et al. Serum selenium and the risk of cervical cancer among women in the United States. Cancer Causes Control. 2002; 13(6): 517-26. PubMed | Google Scholar

  20. Schlesselman JJ. Sample size requirements in cohort and case-control studies of disease. The American Journal of Epidemiology. 1974; 99(6): 381-384. PubMed | Google Scholar

  21. Varian instruments AA at Work. AA-93, Jan 1990.

  22. Varian instruments AA at Work. AA-82, Apr 1988.

  23. Candelaria M, Cetina L, Dueñas-González A. Anemia in cervical cancer patients: implications for iron supplementation therapy. Med Oncol. 2005; 22(2): 161-8. PubMed

  24. Zowczak M, Iskra M, Torlinski L, Cofta S. Analysis of serum copper and zinc concentrations in cancer patients. Biol Trace Elem Res. 2001; 82(1-3): 1-8. PubMed | Google Scholar

  25. Pirincci N, Gecit I, Gunes M, Kaba M, Tanik S, Yuksel MB et al. Levels of serum trace elements in renal cell carcinoma cases. Asian Pac J Cancer Prev. 2013; 14(1): 499-502. PubMed | Google Scholar

  26. Cunzhi H, Jiexian J, Xianwen Z, Jingang G, Shumin Z, Lili D. Serum and tissue levels of six trace elements and copper/zinc ratio in patients with cervical cancer and uterine myoma. Biol Trace Elem Res. 2003; 94(2): 113-22. PubMed | Google Scholar

  27. Yaman M, Kaya G, Simsek M. Comparison of trace element concentrations in cancerous and noncancerous human endometrial and ovary tissues. Int J Gynecol Cancer. 2007; 17(1): 220-8. PubMed | Google Scholar

  28. Kaba M, Pirinççi N, Yüksel MB, Geçit I, Günes M, Demir M et al. Serum Levels of Trace Elements in patients with Testicular Cancers. Int Braz J urol. 2015; 41(6): 1101-07. PubMed | Google Scholar

  29. Wu T, Sempos CT, Freudenheim JL, Muti P, Smit E. Serum iron, copper and zinc concentrations and risk of cancer mortality in US adults. Ann Epidemiol. 2004; 14(3): 195-201. PubMed | Google Scholar

  30. Miyamoto H, Araya Y, Ito M, Isobe H, Dosaka H, Shimizu T et al. Serum selenium and vitamin E concentration in families of lung cancer patients. Cancer. 1987; 60(5): 1159-62. PubMed | Google Scholar

  31. Combs Jr GF. Current evidence and research needs to support a health claim for selenium and cancer prevention. J Nutr. 2005; 135(2): 343-7. PubMed | Google Scholar

  32. Sayir F, Kavak S, Meral I, Demir H, Cengiz N, Cobanoglu U. Effects of crush and axotomy on oxidative stress and some trace element levels in phrenic nerve of rats. Brain Res Bull. 2013; 92: 84-8. PubMed | Google Scholar

  33. Sullivan JF, Blotcky AJ, Jetton MM, Hahn HK, Burch RE. Serum levels of selenium, calcium, copper, magnesium, magnise and zinc in various human diseases. J Nutr. 1979; 109(8): 1432-7. PubMed | Google Scholar