title: Reply to Bang Hyun Lee et al.: Maternal age and human chorionic gonadotropin in early pregnancy: influence of gonadotropin-releasing hormone.
authors: Department of Gynecology and Obstetrics, Akershus University Hospital, Lørenskog, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
authors: Camilla
authors: C
authors: Haavaldsen
authors: Peter
authors: P
authors: Fedorcsak
authors: Tom
authors: T
authors: Tanbo
authors: Anne
authors: A
authors: Eskild
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