References

Baird, D.T. and A.F. Glansier, 1993. Hormonal contraception. N. Engl. J. Med., 328: 1543-1549.
CrossRef  |  PubMed  |  

Burtis, C., E. Ashwood and B. Border, 1996. Liver Functions. In: Tietz Fundamentals of Clinical Chemistry, Aldrich, J.E. (Ed.). WB Saunders Company, Pennsylvania, USA., ISBN: 0-7216-3763-9, pp: 748-770.

Cheesbrough, M., 2002. Clinical Chemistry Tests. In: District Laboratory Practice in Tropical Coutries, Part 1, Cheesbrough, M. (Ed.). Cambridge University Press, Cambridge, UK., ISBN: 0-521-66548-5, pp: 358-362.

Colditz, G.A., S.E. Hankinson and D.J. Hunter, 1995. The use of estrogens and progestins and the risk of breast cancer in postmenopausal women. N. Engl. J. Med., 332: 1598-1599.

Epstein, R.G., 2003. Hormonal contraception and cervical cancer. Lancet, 361: 1915-1918.
CrossRef  |  

Karam, J.A., 2001. The Gonadal Hormones and Inhibitors. Basic and Clinical Pharmacology. 8th Edn., Appleton and Lange Publishers, USA., ISBN: 0-8385-0592-9, pp: 679-708.

Mohllajee, A.P., K.M. Curtis, S.C. Martins and H.B. Peterson, 2006. Hormonal contraceptive use and risk of sexually transmitted infections: A systematic review. Contraception, 73: 154-165.
CrossRef  |  PubMed  |  

Nabulsi, A., A.R. Folsom, A. White, W. Patsch, G. Heiss, K.K. Wu and M. Szklo, 1993. Association of hormone replacement therapy with various cardiovascular risk factors in postmenopausal women. N. Engl. J. Med., 328: 1069-1072.
CrossRef  |  PubMed  |  

Petitti, D.B., 2003. Combination of estrogen-progestin Oral Contraceptives. N. Engl. J. Med., 349: 92-92.
CrossRef  |  PubMed  |  

Reichling, J.J. and M.M. Kaplan, 1988. Clinical use of serum enzymes in liver disease. Dig. Dis. Sci., 33: 1601-1614.
PubMed  |  

Santelli, J., R. Rochat, K. Hatfield-Timajchy, B.C. Gilbert and K. Curtis et al., 2003. The measurement and meaning of unintended pregnancy: Prospect. Sex Reprod. Health, 35: 94-101.
CrossRef  |  PubMed  |