1Schlesselman JJ. Risk of endometrial cancer in relation to use of combined oral contraceptives: a practitioner's guide to meta - analysis. Hum Reprod, 1997,12 : 1851 - 1863.
2Beral V, Hannaford P, Kay C. Oral contraceptive use and malignancies of the genital tract. Results of the Royal College of General Practitioners'oral contraception study. Lancet,1988,2:1331 - 1335.
3Vessey et al. Epidemiology of endometriosis in women attending family planning clinics. BMJ, 1993,306 : 182 - 184.
4Palatsi R et al. Serum total and unbound testosterone and sex hormone binding globulin (SHBG) in female acne patients treated with two different oral contraceptives. Acta Derm Venereol, 1984,64 ( 6 ) : 517 - 523.
5Dewis P et al. The treatment of hirsutism with a combination of desogestrel and ethinyl oestradiol. Clin Endocrinol ( Oxf), 1985,22 (1) :29-36.
6Cullberg Get al. Effects of a low - dose desogestrel - ethinylestradiol combination on hirsutism, androgens and sex hormone binding globulin in women with a polyeystic ovary syndrome. Acta Obstet Gynecol Scand, 1985,64 ( 3 ) : 195 - 202.
7Thomeycroft IH.Evolution of progestins:Focus on the novel progestin drospirenone[J].J Reprod Med,2002,47(11 Suppl):975.
8Kulier R,Helmerhorst FM,Maitra N,et al.Effectiveness and acceptability of progestogens in combined oral contraceptives-a systematic review[J].Reprod Health,2004,1(1):1.
9Schlesselman JJ.Risk of endometrial cancer in relation to use of combined oral contraceptives:a practitioner′s guide to meta-analysis[J].Hum Reprod,1997,12(9):1851.
10Beral V,Hannaford P,Kay C.Oral contraceptive use and malignancies of the genital tract.Results of the royal college of general practitioners′ oral contraception study[J].Lancet,1988,2(8624):1331.