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This book is a compilation of all the work which Zondek. and his co-workers have done in the field of endocrinology; it contains data not published heretofore. The contributions which the author has made, in collaboration chiefly with Aschheim, represent one of the greatest practical advances made in the field of obstetrics and gynecology. The author began his studies on the hormones of the ovaries and the hypophysis in 1913 and has persistently carried on his research. The culmination of this work is undoubtedly the Aschheim-Zondek test for pregnancy, which has proved to be reliable in at least 98 per cent of all the cases examined. This test is now being used all over the civilized world and the author gives a list of 4,315 cases in which the test was used by twenty-nine individuals. Aschheim and Zondek themselves performed 1,200 of these tests, and in the total of 5,515
Die Hormone des Ovariums und des Hypophysenvorderlappens: Untersuchungen zur Biologie und Klinik der weiblichen Genitalfunktion.. JAMA. 1931;97(3):202. doi:10.1001/jama.1931.02730030052036