title: Maternal age and serum concentration of human chorionic gonadotropin in early pregnancy: influence of gonadotropin-releasing hormone.
authors.affiliation: Department of Obstetrics & Gynecology, Seoul National University Bundang Hospital, Seoul National University, Seoul, Korea.
authors.forename: Banghyun
authors.initials: B
authors.lastname: Lee
authors.forename: Tae Chul
authors.initials: TC
authors.lastname: Park
authors.forename: Hee Joong
authors.initials: HJ
authors.lastname: Lee
mesh_terms: D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D011261:Pregnancy Trimester, First / Q000097:blood*
chemical_list: D018997:Chorionic Gonadotropin, beta Subunit, Human