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Nusselder WJ, van der Velden K, van Sonsbeek JL, Lenior ME, van den Bos GA.Nusselder WJ, et al.Am J Public Health. 1996 Feb;86(2):187-94. doi: 10.2105/ajph.86.2.187.Am J Public Health. 1996.PMID: 8633734Free PMC article.