title: Different aetiological mechanisms for unexplained and endometriosis-associated infertility cannot be inferred from unstimulated IVF cycles using HCG to induce ovulation.
authors.forename: Stephen D
authors.initials: SD
authors.lastname: Keay
authors.forename: David J
authors.initials: DJ
authors.lastname: Cahill
mesh_terms: D006063:Chorionic Gonadotropin / Q000627:therapeutic use*; D004715:Endometriosis / Q000150:complications*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007247:Infertility, Female / Q000209:etiology*; D010062:Ovulation Induction / Q000379:methods*
chemical_list: D006063:Chorionic Gonadotropin