Erratum
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In the article **The Middle Interhemispheric Variant of Holoprosecephaly,** Simon EM, Hevner RF, Pinter JD, Clegg NJ, Delgado M, Kinsman SL, Hahn JS, and Barkovich AJ, AJNR 23:151–155, January 2002, the following error occurred: In the “Results” paragraph of the abstract, the sentence “2) The caudate nuclei were separated by the cerebral ventricles in 17 (89%) of the 17 patients …” should read “2) The caudate nuclei were separated by the cerebral ventricles in 17 (89%) of the ***19 patients …***” [emphasis added]; in the “Results” section of the abstract, sentence “4) Three (18%) of the 16 patients in whom the mesencephalon…” should read “4) Three (18%) of the ***17 patients…”*** [emphasis added].

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