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Kruijshaar ME, Hoeymans N, Spijker J, Stouthard ME, Essink-Bot ML.Kruijshaar ME, et al. Among authors: spijker j.Bull World Health Organ. 2005 Jun;83(6):443-8. Epub 2005 Jun 17.Bull World Health Organ. 2005.PMID: 15976895Free PMC article.