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December 11, 1937

International Unit for Estrone

JAMA. 1937;109(24):1997. doi:10.1001/jama.1937.02780500053020

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On page 1865 of the December 4 issue of The Journal, in the article by R. T. Frank and others, the international unit for estrone (theelin, "ketohydroxyestrin") should have been given as 0.1 microgram instead of 1 microgram.

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