Reference:
1. MacGregor EA, Guillebaud J. The 7-day contraceptive hormone-free interval should be consigned to history. BMJ Sex Reprod Health. 2018;44(3):214-20.
2. Birth control [Internet]. Mayo Clinic. 2022 [cited 2024 May 14]. Available from: https://www.mayoclinic.org/healthy-lifestyle/birth-control/in-depth/womens-health/art-20044044.
3. FSRH Guideline (January 2019, amended October 2023) Combined hormonal contraception. BMJ Sex Reprod Health. 2019;45(Suppl 1):1-94.
Keywords:
เลื่อนประจำเดือน, oral contraceptives, ยาเม็ดคุมกำเนิด