| 标题 |
Pill-a-month as an oral contraceptive
一个月一片口服避孕药
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| 其它 | The first 600 cases of a 1200-case study of a monthly contraceptive pill at the Family Planning Clinic at Al-Azhar University Hospital in Cairo are described. The estrogen component, Quinestrol (17 alpha ethinyl estradiol-3-cyclopentyl ether) has prolonged activity. Quingestanol acetate (3 cyclopentyl ether derivative of norethindrone acetate), the progestogen component of the pill, induces withdrawal bleeding, and regulates the cycle. |
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