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Research Article Free access | 10.1172/JCI101183
Department of Obstetrics and Gynecology and the Gynecean Hospital Institute of Gynecologic Research, University of Pennsylvania, Philadelphia
1Aided by a grant from the Penrose Fund of the American Philosophical Society.
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Department of Obstetrics and Gynecology and the Gynecean Hospital Institute of Gynecologic Research, University of Pennsylvania, Philadelphia
1Aided by a grant from the Penrose Fund of the American Philosophical Society.
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Department of Obstetrics and Gynecology and the Gynecean Hospital Institute of Gynecologic Research, University of Pennsylvania, Philadelphia
1Aided by a grant from the Penrose Fund of the American Philosophical Society.
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Published November 1, 1940 - More info