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Haverkamp L, Weijs TJ, van der Sluis PC, van der Tweel I, Ruurda JP, van Hillegersberg R.Haverkamp L, et al. Among authors: ruurda jp.Surg Endosc. 2013 May;27(5):1509-20. doi: 10.1007/s00464-012-2661-1. Epub 2012 Dec 14.Surg Endosc. 2013.PMID: 23263644Review.