1WHO RHR. Selected practice recommendations for contraceptive use 2002 World Health Organiation. Improving access to quality care in family planning. Medical eligibility criteria for contraceptiv use. 2nd ed. 2000 World Health Organization.
2WHO. Improving access to quality care in family planning. Medical eligibility criteria for contraceptive urn. 3rd ed. [ 2004 - 04 - 02 ].http: www. WHO. Int/reproductive-health/publications/MEC-3/change-tables. html.
3WHO RHR. Contraceptive implants come of age. Prog Reprod Health Res, 2003,61 ~ 1.
4Sivin I, Croxatto H, Bahamondes L, et al. Two-year perfomaance of a Nestorone-releasing contraceptive implant: a three-center study of 300 women. Contraception,2004,69(2) : 137-143.
5Dieben TO,Roumen FJ,Apter D. Efficacy,cycle control,and user acceptability of a novel combined contraceptive vaginal ring. Obstet Gynecol, 2002,100 (3) : 585-591.
6Audet MC, Moreau M, Koltum WD, et al. Evaluation of contraceptive efficacy and cycle control of a transdermal contraceptivepatch vs. an oral contraceptive: a randomized controlled trial. JAMA, 2001,285(18) :2347-2351.
7Loose-Mitchell DS, Stancel GM. Estrogens and progestins in Goodman and Gilman's. The Pharmacolgical Basis of Therapeutic, 2002. 1579.
8Edwarcks KG, Cohen J. Reproductive choice in 2002 : the relative safety of current oral contraceptives. Hum Reprod Experts, 2000,1:1.
9WHO. Improving access to quality care in family planning. Medical eligibility criteria for contraceptive use. 2nd ed. 2000 World Health Organization.
10Petitti DB,Piaggo G,Mehta S,et al.Steroid hormone contraception and bone mineral density:a cross-sectional study in an international population[J].Obetet Gynecol,2000,95 (5):736-44
