Hsieh, Y Y Intramural pregnancy with negative maternal serum beta-hCG. A case report. [electronic resource] - The Journal of reproductive medicine May 1998 - 468-70 p. digital Publication Type: Case Reports; Journal Article ISSN: 0024-7758 Subjects--Topical Terms: AdultChorionic Gonadotropin, beta Subunit, Human--bloodDilatation and CurettageFemaleHumansPregnancyPregnancy, Ectopic--diagnosisUltrasonography