Progesterone-induced withdrawal bleeding as a simple physiologic test for pregnancy

Glen E. Hayden
In: American Journal of Obstetrics and Gynecology · 1958 · vol. 76(2) , pp. 271–278 · doi:10.1016/0002-9378(58)90213-8 · W1580992391
article OA: closed CC0
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last seen: 2026-06-10T17:14:06.276822+00:00
License: CC0 · commercial use OK