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Buijs L, Pietersz RN, van den Berg-Wolf MG, Reesink HW, ten Veen JH.Buijs L, et al. Among authors: pietersz rn.Ned Tijdschr Geneeskd. 1990 Jan 13;134(2):71-5.Ned Tijdschr Geneeskd. 1990.PMID: 2296325Dutch.