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Wagner, Oliver J; Hagen, Monika; Morel, Philippe; Inan, Ihsan; Candinas, Daniel; Vorburger, Stephan A (2008). Who should do NOTES? Initial endoscopic performance of laparoscopic surgeons compared to gastroenterologists and untrained individuals. Journal of gastrointestinal surgery, 12(10), pp. 1724-9. New York, N.Y.: Springer-Verlag 10.1007/s11605-008-0649-x
