REFERENCES
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- Davis, M. E. and Plotz, E. J.: Hormones in human reproduction. Part II. Further investigations of steroid metabolism in human pregnancy. Am. J. Obst. & Gynec. 76: 939, 1958.
- Kupperman, H. S.: Progesterone and related steroids in the management of recurrent abortion. Brook Lodge Symposium on Progesterone, Kalamazoo, Michigan, 1961.
- Kistner, R. W.: The use of progestational agents in obstetrics and gynecology. Clin. Obst. & Gynec. 3: 1047–1067, 1960.