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van Kerkhoven LA, van Rijswijck SJ, van Rossum LG, Laheij RJ, Witteman EM, Tan AC, Jansen JB.van Kerkhoven LA, et al. Among authors: laheij rj.Endoscopy. 2007 Jun;39(6):502-6. doi: 10.1055/s-2007-966269. Epub 2007 Mar 19.Endoscopy. 2007.PMID: 17372863