title: Biochemical and sonographic evaluation of the very early intrauterine pregnancy.
authors.affiliation: Department of Obstetrics and Gynecology, Mount Sinai School of Medicine, New York, NY 10029, USA.
authors.forename: A B
authors.initials: AB
authors.lastname: Copperman
authors.forename: M
authors.initials: M
authors.lastname: Bustillo
mesh_terms: D015415:Biomarkers; D006063:Chorionic Gonadotropin / Q000097:blood; D004622:Embryo, Mammalian / Q000502:physiology; D005314:Embryonic and Fetal Development; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D016216:Ultrasonography, Prenatal
chemical_list: D015415:Biomarkers; D006063:Chorionic Gonadotropin