title: Correlation of transvaginal ultrasound findings and serum beta-hCG level in cervical pregnancy.
authors.forename: S-F
authors.initials: SF
authors.lastname: Yim
authors.forename: K W K
authors.initials: KW
authors.lastname: Lo
authors.forename: S S C
authors.initials: SS
authors.lastname: Chan
authors.forename: T-H
authors.initials: TH
authors.lastname: Cheung
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood; D002584:Cervix Uteri; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000097:blood / Q000000981:diagnostic imaging*; D016216:Ultrasonography, Prenatal / Q000379:methods*
chemical_list: D015415:Biomarkers; D018997:Chorionic Gonadotropin, beta Subunit, Human