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de Brouwer EJ, Arbouw ME, van der Zwet WC, van Herwaarden MA, Ledeboer M, Jansman FG, ter Borg F.de Brouwer EJ, et al. Among authors: jansman fg.Gastrointest Endosc. 2012 Apr;75(4):835-40. doi: 10.1016/j.gie.2011.12.010. Epub 2012 Feb 7.Gastrointest Endosc. 2012.PMID: 22317882Clinical Trial.