This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
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.
International Unit for Estrone. JAMA. 1937;109(24):1997. doi:10.1001/jama.1937.02780500053020