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Alexander S. Wiener, M.D.
JAMA. 1932;99(3):242-243. doi:10.1001/jama.1932.02740550056028.
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To the Editor:  —In reply to an inquiry concerning the application of blood groups for the determination of nonpaternity (The Journal, May 21, p. 1832), you quote the von Dungern and Hirschfeld theory after Ottenberg and Beres, and state: "Although a number of workers have repeatedly confirmed the statements of Ottenberg and Beres, the subject is still one of controversy." As a matter of fact, there is no longer any controversy; and since there has been a good deal of misunderstanding on the question of the application of the Landsteiner blood groups in problems involving blood relationship, I am writing this letter to present the pertinent facts in an attempt to clarify the subject.As you point out in your reply, von Dungern and Hirschfeld were the first to prove that the agglutinogens A and B cannot appear in the blood of a child unless present in the blood of


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