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To the Editor:—
May I call attention to a mistake in the article "CQ for M.D.'s... RX for a Fascinating Pastime" on page 1308 of the Nov. 9 issue of The Journal. The Radio Amateur Call Book is published quarterly instead of semiannually. I think the article is very good and timely.
Blake ELD. RADIO AMATEUR CALL BOOK. JAMA. 1957;165(17):2220. doi:10.1001/jama.1957.02980350078026
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