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To the Editor:
—In his article on anemias (The Journal, April 29, p. 1303), Ottenberg calls attention to the observation that has been made regarding the relationship of copper to the anemias. He also calls attention to the very minute quantities of copper required.During a period of nine years' practice in Korea, the last three of which have been entirely in internal medicine in a hospital with an attendance of 50,000 patients yearly in the outpatient department, it has not been possible to make the diagnosis of pernicious anemia or sprue in a single instance. I do not wish to create the impression that pernicious anemia does not occur in Korea, but of more than 3,000 patients examined personally and in whom complete blood studies were made it has not been possible to confirm a diagnosis of pernicious anemia.There are two other facts of at least passing interest
Bercovitz Z. ANEMIA IN KOREA. JAMA. 1933;101(8):622–623. doi:10.1001/jama.1933.02740330054031
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