title: Progesterone level and progesterone/estradiol ratio on the day of human chorionic gonadotropin administration: detrimental cutoff levels and new treatment strategy?
authors.forename: Francisca
authors.initials: F
authors.lastname: Martínez
mesh_terms: D015415:Biomarkers / Q000097:blood; D006063:Chorionic Gonadotropin / Q000008:administration & dosage*; D004334:Drug Administration Schedule; D010064:Embryo Implantation; D004624:Embryo Transfer; D004958:Estradiol / Q000097:blood*; D005260:Female; D005300:Fertility Agents, Female / Q000008:administration & dosage*; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy; D018873:Pregnancy Rate; D011374:Progesterone / Q000097:blood*; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D015415:Biomarkers; D006063:Chorionic Gonadotropin; D005300:Fertility Agents, Female; D011374:Progesterone; D004958:Estradiol