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Bakker HH, de Jong EA.Bakker HH, et al.Ned Tijdschr Geneeskd. 1986 Aug 2;130(31):1401-3.Ned Tijdschr Geneeskd. 1986.PMID: 3748231Dutch.No abstract available.
van den Berg H, Abbad FC, Post E, Bakker HH, Ploos van Amstel SL.van den Berg H, et al. Among authors: bakker hh.Tijdschr Kindergeneeskd. 1985 Feb;53(1):34-8.Tijdschr Kindergeneeskd. 1985.PMID: 3992571Dutch.