7WHO RHR. Contraceptive implants come of age[J].Prog Reprod HealthRes,2003.1-4.
8Pritts EA,Ryan IP,Mueller MD. Angiogenic effects of Norplant contraception on endometrial histology and uterine bleeding[J].Journal of Clinical Endocrinology and Metabolism,2005,(04):21422147.
9Hatch EE,Linet MS,Zhang JY. Peproduction and hormal factors and risk of brain tumors in adult females[J].J Int J Cancer,2005.797-805.
10Pongsatha s,Ekmahachai M,Suntomlimsiri N. Bone mineral density in women using the subdermal contraceptive implant Implanon for at least 2 years[J].International Journal of Gynecology and Obstetrics,2010,(03):223-225.
