title: Value of human chorionic gonadotropin levels in diagnosing cervical ectopic pregnancy.
authors.forename: Siew-Fei
authors.initials: SF
authors.lastname: Ngu
authors.forename: Jennifer K Y
authors.initials: JK
authors.lastname: Ko
authors.forename: Vincent Y T
authors.initials: VY
authors.lastname: Cheung
mesh_terms: D000020:Abortifacient Agents, Nonsteroidal / Q000627:therapeutic use; D000328:Adult; D002584:Cervix Uteri / Q000473:pathology*; D006063:Chorionic Gonadotropin / Q000097:blood*; D005260:Female; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000097:blood / Q000175:diagnosis* / Q000188:drug therapy; D016216:Ultrasonography, Prenatal
chemical_list: D000020:Abortifacient Agents, Nonsteroidal; D006063:Chorionic Gonadotropin; D008727:Methotrexate