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Gynaecology & Obstetrics
All of the following statements regarding the mechanism of action of combined oral contraceptive drugs are TRUE, EXCEPT:
Progestins prevent ovulation by suppressing LH release
Progestins cause thickening of cervical mucus and prevent sperm passage
Estrogen modifies tubal and uterine contractions and prevent feilization
Estrogen makes endometrium hyperproliferative and hypersecretory and prevents implantation
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