Does implantation occur in the presence of an IUD?
D006063:Chorionic Gonadotropin / Q000097:blood; D010064:Embryo Implantation; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D007986:Luteinizing Hormone / Q000097:blood
D006063:Chorionic Gonadotropin; D007986:Luteinizing Hormone