PEDIATRICS Vol. 9 No. 3 March 1952, pp. 386
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ERRATA

Special Article, American Board of Pediatrics, Pediatrics, vol. 8, October, p. 600, line 19 should read: "true grade by not more than 3.39 and the odds are 2 to 1 that the assigned grade will differ from the true grade by not more than 5.03...."