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To the Editor.—
Unfortunately, somewhere in the course of editing and rewriting this error appeared, which I should have noticed. I meant to say that about 20% of Americans are believed to have a hereditary disposition to hypersensitivity, cited from N. P. Christy in the American Journal of Medicine (42:121, 1967).
Horen WP. Allergy to Insect Stings. JAMA. 1972;222(10):1309. doi:10.1001/jama.1972.03210100057025