title: Progress on a potentially lethal disease.
authors.forename: J F
authors.initials: JF
authors.lastname: Barlow
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood / Q000652:urine; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007118:Immunoassay; D011247:Pregnancy; D011258:Pregnancy Tests; D011271:Pregnancy, Ectopic / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000401:mortality*; D012307:Risk Factors; D014463:Ultrasonography
chemical_list: D006063:Chorionic Gonadotropin