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KNAPE M, LIEFSTINGH SR.KNAPE M, et al.Ned Tijdschr Geneeskd. 1956 Oct 20;100(42):2987-90.Ned Tijdschr Geneeskd. 1956.PMID: 13387835Dutch.No abstract available.
DEKKERS HJ, KNAPE M, van der LINDE H.DEKKERS HJ, et al. Among authors: knape m.Ned Tijdschr Geneeskd. 1960 May 28;104:1077-80.Ned Tijdschr Geneeskd. 1960.PMID: 13815488Dutch.No abstract available.