Hartikainen-Sorri, A L Inefficacy of 17 alpha-hydroxyprogesterone caproate in the prevention of prematurity in twin pregnancy. [electronic resource] - Obstetrics and gynecology Dec 1980 - 692-5 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0029-7844 Subjects--Topical Terms: 17 alpha-Hydroxyprogesterone CaproateDouble-Blind MethodEstrogens--bloodFemaleHydroxyprogesterones--therapeutic useObstetric Labor, Premature--prevention & controlPlacental Lactogen--bloodPregnancyPregnancy Trimester, ThirdPregnancy, MultipleProgesterone--bloodTestosterone--bloodTwins