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In the article "The Incidence of Blood Group A in Pernicious Anemia," by Drs. W. P. Creger and A. T. Sortor, in the August, 1956, issue of the Archives, the values for P (third line, left-hand column, p. 137) should be >0.01 and <0.025.
CORRECTION. AMA Arch Intern Med. 1956;98(6):690. doi:10.1001/archinte.1956.00250300008002