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van Kamp IL, Klumper FJ, Meerman RH, Brand A, Bennebroek Gravenhorst J, Kanhai HH.van Kamp IL, et al. Among authors: kanhai hh.Ned Tijdschr Geneeskd. 1999 Dec 11;143(50):2527-31.Ned Tijdschr Geneeskd. 1999.PMID: 10627756Dutch.