title: First trimester pregnancy: ultrasound and biochemical evaluation.
authors.affiliation: Department of Obstetrics and Gynaecology, Coombe Women's Hospital, Dublin 8, Ireland.
authors.forename: S
authors.initials: S
authors.lastname: Daly
authors.forename: W
authors.initials: W
authors.lastname: Prendiville
mesh_terms: D000022:Abortion, Spontaneous / Q000097:blood* / Q000000981:diagnostic imaging*; D000465:Algorithms; D006063:Chorionic Gonadotropin / Q000097:blood; D003663:Decision Trees; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods*; D011374:Progesterone / Q000097:blood; D012680:Sensitivity and Specificity; D014463:Ultrasonography
chemical_list: D006063:Chorionic Gonadotropin; D011374:Progesterone