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In the article by this title in The Journal, July 24, 1948, the dosage on page 1112, column 1, in the fourteenth line from the bottom, should read 0.7 mg. instead of 0.07 mg.
Treatment of Migraine with Histamine. JAMA. 1948;138(3):224. doi:10.1001/jama.1948.02900030056015