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van den Berg MD, Oldehinkel AJ, Haaijer-Ruskamp FM, Ormel J.van den Berg MD, et al. Among authors: oldehinkel aj.Ned Tijdschr Geneeskd. 2001 May 19;145(20):958-62.Ned Tijdschr Geneeskd. 2001.PMID: 11396262Dutch.