Abortifacient effect of intrauterine contraceptive devices?
D000022:Abortion, Spontaneous / Q000209:etiology*; D006063:Chorionic Gonadotropin / Q000097:blood*; D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D011247:Pregnancy; D011863:Radioimmunoassay
D006063:Chorionic Gonadotropin