title: Ectopic pregnancy and the pill.
mesh_terms: D003276:Contraceptives, Oral / Q000008:administration & dosage / Q000009:adverse effects*; D004967:Estrogens / Q000378:metabolism; D005260:Female; D006065:Gonadotropins, Pituitary / Q000378:metabolism; D006801:Humans; D011247:Pregnancy; D011274:Pregnancy, Tubal / Q000209:etiology*; D011374:Progesterone / Q000378:metabolism; D013375:Substance Withdrawal Syndrome
chemical_list: D003276:Contraceptives, Oral; D004967:Estrogens; D006065:Gonadotropins, Pituitary; D011374:Progesterone