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Hofstra JJ, Cornet AD, de Rooy BF, Vlaar AP, van der Poll T, Levi M, Zaat SA, Schultz MJ.Hofstra JJ, et al. Among authors: schultz mj.Crit Care. 2009;13(5):R145. doi: 10.1186/cc8040. Epub 2009 Sep 9.Crit Care. 2009.PMID: 19740417Free PMC article.