Advances in gynaecology.
D003267:Contraception; D005260:Female; D005831:Genital Diseases, Female / Q000628:therapy*; D006801:Humans; D010906:Pituitary Hormone-Releasing Hormones; D011247:Pregnancy; D011374:Progesterone / Q000627:therapeutic use; D014465:Ultrasonics
D010906:Pituitary Hormone-Releasing Hormones; D011374:Progesterone