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van de Schans SA, Steyerberg EW, Nijziel MR, Creemers GJ, Janssen-Heijnen ML, van Spronsen DJ.van de Schans SA, et al. Among authors: van spronsen dj.Ann Oncol. 2009 Oct;20(10):1697-702. doi: 10.1093/annonc/mdp053. Epub 2009 Jun 23.Ann Oncol. 2009.PMID: 19549712Free article.