title: Ectopic pregnancy with negative serum human chorionic gonadotropin.
authors.affiliation: Department of Gynecology and Obstetrics, Esbjerg Hospital, Esbjerg, Denmark. mikael_tp@hotmail.com
authors.forename: Mikael
authors.initials: M
authors.lastname: Tang-Pedersen
authors.forename: Bent
authors.initials: B
authors.lastname: Andersen
mesh_terms: D000006:Abdomen, Acute / Q000209:etiology; D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood* / Q000652:urine*; D003937:Diagnosis, Differential; D005187:Fallopian Tubes / Q000601:surgery; D005260:Female; D006801:Humans; D010535:Laparoscopy; D011247:Pregnancy; D011274:Pregnancy, Tubal / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D016216:Ultrasonography, Prenatal
chemical_list: D006063:Chorionic Gonadotropin