title: Relationship between maternal serum levels of alpha-fetoprotein and human chorionic gonadotropin in the early second trimester.
authors.forename: A
authors.initials: A
authors.lastname: Kelemen
authors.forename: B
authors.initials: B
authors.lastname: Pejtsik
authors.forename: J
authors.initials: J
authors.lastname: Bódis
authors.forename: G
authors.initials: G
authors.lastname: Rappay
mesh_terms: D006063:Chorionic Gonadotropin / Q000097:blood*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D011247:Pregnancy / Q000097:blood*; D011256:Pregnancy Outcome; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis / Q000379:methods; D012307:Risk Factors; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D006063:Chorionic Gonadotropin; D000509:alpha-Fetoproteins