References
- Wiegratz I, Kuhl H. Long-cycle treatment with oral contraceptives. Drugs 2004;64:2447–2462.
- Schlaff W, Lynch AM, Hughes HD, et al Manipulation of the pill-free interval in oral contraceptive pill users: The effect on follicular suppression. Am J Obstet Gynecol 2004;190:943–951.
- Birtch RL, Olatunbosun OA, Pierson RA. Ovarian follicular dynamics during conventional vs. continuous oral contraceptive use. Contraception 2006;73:235–243.
- Coffee AL, Sulak PJ, Kuehl TJ. Long-term assessment of symptomatology and satisfaction of an extended oral contraceptive regimen. Contraception 2007;75:444–449.
- Sulak PJ, Scow RD, Preece C, et al Hormone withdrawal symptoms in oral contraceptive users. Obstet Gynecol 2000;95:261–266.
- Maia H Jr, Casoy J. Non-contraceptive health benefits of oral contraceptives. Eur J Contracept Reprod Health Care 2008;13:17–24.
- Wiegratz I, Kissler S, Kuhl H, et al Extended and continuous use of hormonal contraceptives to reduce menstruation. Women's Health 2006;2:705–716.
- Fruzzetti F, Paoletti AM, Lombardo M, et al Attitudes of Italian women concerning suppression of menstruation with oral contraceptives. Eur J Contracept Reprod Health Care 2008;13:153–157.
- Edelman A, Lew R, Cwiak C, et al Acceptability of contraceptive-induced amenorrhea in a racially diverse group of US women. Contraception 2007;75:450–453.
- Anderson FD, Hait H, the Seasonale-301 Study Group. A multicenter, randomized study of an extended cycle oral contraceptive. Contraception 2003;68:89–96.
- Guazzelli CAF, Barreiros FA, Barbosa R, et al Extended regimens of the vaginal contraceptive ring: Cycle control. Contraception 2010;80:430–435.
- Miller L, Hughes JP. Continuous combination oral contraceptive pills to eliminate withdrawal bleeding: A randomized trial. Obstet Gynecol 2003;101:653–661.
- Archer DF, Jensen JT, Johnson JV, et al Evaluation of a continuous regimen of levonorgestrel/ethinyl estradiol: Phase 3 study results. Contraception 2006;74:439–445.
- Wiegratz I, Hommel HH, Zimmermann T, et al Attitude of German women and gynaecologists towards long-cycle treatment with oral contraceptives. Contraception 2004;69:37–42.
- Sulak PJ, Buckley T, Kuehl TJ. Attitudes and prescribing preferences of health care professionals in the United States regarding use of extended-cycle oral contraceptives. Contraception 2006;73:41–45.
- Sulak PJ, Kuehl TJ, Coffee A, et al Prospective analysis of occurrence and management of breakthrough bleeding during an extended oral contraceptive regimen. Am J Obstet Gynecol 2006;195:935–941.
- Jensen JT. A continuous regimen of levonorgestrel/ethinyl estradiol for contraception and elimination of menstruation. Drugs of Today 2008;44:183–195.
- Jung-Hoffmann C, Kuhl H. Intra- and interindividual variations in contraceptive steroid levels during 12 treatment cycles: No relation to irregular bleedings. Contraception 1990;42:423–438.
- Reape KZ, DiLiberti CE. Steady-state pharmacokinetics of an extended-regimen oral contraceptive with continuous estrogen. Obstet Gynecol 2007;109(Suppl):13S.
- Wiegratz I, Stahlberg S, Manthey T, et al Effects of combined oral contraceptive ethinylestradiol (30 μg) and dienogest (2 mg) on carbohydrate metabolism during 1 year of conventional or extended-cycle use. Horm Metab Res 2010;42:358–363.
- Wiegratz I, Stahlberg S, Manthey T, et al Effects of an oral contraceptive containing 30 mcg ethinylestradiol and 2 mg dienogest on lipid metabolism during 1 year of conventional or extended-cycle use. Contraception 2010;81:57–61.
- Wiegratz I, Stahlberg S, Manthey T, et al Effects of conventional or extended-cycle regimen of an oral contraceptive containing 30 mcg ethinylestradiol and 2 mg dienogest on various hemostasis parameters. Contraception 2008;78:384–391.
- Sänger N, Stahlberg S, Manthey T, et al Effects of an oral contraceptive containing 30 mcg ethinylestradiol and 2 mg dienogest on thyroid hormones and androgen parameters: Conventional vs. extended-cycle use. Contraception 2008;77:420–425.
- Andrist LC, Arias RD, Nucatola D, et al Women's and providers' attitudes toward menstrual suppression with extended use of oral contraceptives. Contraception 2004; 70:359–363.
- Gerschultz KL, Sucato GS, Hennon TR, et al Extended cycling of combined hormonal contraceptives in adolescents: Physician views and prescribing practices. J Adolesc Health 2007;40:151–157.