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3. L. F. Shinkareva, Internal Endometriosis of the Uterus, Doctoral Dissertation, Moscow (1967).
4. T. Csermely, Z. M. Demers, and E. C. Hughes, Obstet. Gynecol.,34, 252 (1969).
5. T. Csermely, Z. M. Demers, and E. C. Hughes, Am. J. Obstet. Gynecol.,109, 1066 (1971).