title: Maternal urinary free beta-subunit of human chorionic gonadotrophin: creatinine ratios and fetal chromosomal abnormalities in the second trimester of pregnancy.
authors.affiliation: Department of Obstetrics and Gynaecology, St Luke's International Hospital, Tokyo, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Hayashi
authors.forename: H
authors.initials: H
authors.lastname: Kozu
authors.forename: H
authors.initials: H
authors.lastname: Takei
mesh_terms: D000328:Adult; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000652:urine*; D002869:Chromosome Aberrations; D002887:Chromosomes, Human, Pair 18; D002891:Chromosomes, Human, Pair 21; D005260:Female; D005865:Gestational Age; D006801:Humans; D007621:Karyotyping; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D011296:Prenatal Diagnosis / Q000379:methods*; D014314:Trisomy; D014424:Turner Syndrome / Q000175:diagnosis
chemical_list: D018997:Chorionic Gonadotropin, beta Subunit, Human