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Los FJ, Van Hemel JO, Jacobs HJ, Drop SL, van Dongen JJ.Los FJ, et al. Among authors: jacobs hj.J Med Genet. 1994 Jan;31(1):72-3. doi: 10.1136/jmg.31.1.72.J Med Genet. 1994.PMID: 8151644Free PMC article.