Stika, C S Single-dose methotrexate for the treatment of ectopic pregnancy: Northwestern Memorial Hospital three-year experience. [electronic resource] - American journal of obstetrics and gynecology Jun 1996 - 1840-6; discussion 1846-8 p. digital Publication Type: Journal Article ISSN: 0002-9378 Standard No.: 10.1016/s0002-9378(96)70219-3 doi Subjects--Topical Terms: AdolescentAdultChorionic Gonadotropin, beta Subunit, Human--bloodFemaleHumansMethotrexate--administration & dosagePelvic PainPregnancyPregnancy, Ectopic--drug therapyRetrospective StudiesTreatment Failure