title: Human chorionic gonadotropin levels in the evaluation of ectopic pregnancy.
authors.forename: F C
authors.initials: FC
authors.lastname: Laing
authors.forename: D L
authors.initials: DL
authors.lastname: Brown
mesh_terms: D000650:Amnion / Q000000981:diagnostic imaging; D002823:Chorion / Q000000981:diagnostic imaging; D006063:Chorionic Gonadotropin / Q000032:analysis*; D003656:Decidua / Q000000981:diagnostic imaging; D004717:Endometrium / Q000000981:diagnostic imaging; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000000981:diagnostic imaging / Q000378:metabolism*; D012680:Sensitivity and Specificity; D016216:Ultrasonography, Prenatal
chemical_list: D006063:Chorionic Gonadotropin