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Troelstra A, Kamp-Hopmans TE, Wessels FJ, Bilkert-Mooiman MA, Verhoef J, Mascini EM.Troelstra A, et al. Among authors: kamp hopmans te.Ned Tijdschr Geneeskd. 2002 Nov 16;146(46):2204-7.Ned Tijdschr Geneeskd. 2002.PMID: 12467166Dutch.