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Callen DF, Eyre H, Lane S, Shen Y, Hansmann I, Spinner N, Zackai E, McDonald-McGinn D, Schuffenhauer S, Wauters J, et al.Callen DF, et al.J Med Genet. 1993 Oct;30(10):828-32. doi: 10.1136/jmg.30.10.828.J Med Genet. 1993.PMID: 8230159Free PMC article.