To the Editor:
—Dr. Chester S. Keefer was good enough to call to my attention an error which Dr. Rappolt and I had made in citing Dr. Yang and himself in our article in the June 1945 issue of the Archives (p. 404). In this article we said: "Yang and Keefer have reported the only 2 cases of pernicious anemia in Chinese observed previously on this continent. They were cases of Minot's and apparently were typical." Yang and Keefer have reported 2 cases of pernicious anemia in Chinese patients, but these were observed in Peiping, China. In their article they refer to a case which Minot had observed in the United States. This case was not observed by them and has not been reported by Minot.