1. Wiesbader, H., Oral therapy with pregneninolone in functional uterine bleeding, Am. J. Obstet. Gynecol. 42: 1013 (1941).
2. Noyes, R.H., Hertig, A.T., and Rock, J., Dating the endometrial biopsy, Fertil. Steril. 1: 3 ( 1950.
3. Schmidt-Matthiesen, H., Histochemistry of the effects of gesta-gens on the human endometrium, in: “International Encyclopedia of Pharmacologic Therapy”, Section 48, Vol. 1, Tausk, M., ed., Pergamon Press, Oxford, p. 457 (1971).
4. Boutselis, J.G., Histochemistry of the normal endometrium, in: “The Uterus”, Norris, H.J., Hertig, A.T., and Abell, M.R., eds., The Williams and Wilkins Co., Baltimore, p. 175, (1973).
5. Tseng, L., and Gurpide, E., Induction of human endometrial estradiol dehydrogenase by progestins, Endocrinology 97: 825 (1975).