Adhesion formation after peritoneoscopy with liver biopsy in a survival porcine model: comparison of laparotomy, laparoscopy, and transgastric natural orifice transluminal endoscopic surgery (NOTES) - Dubcenco, E.; Assumpcao, L.; Dray, X.; Gabrielson, K. L.; Ruben, D. S.; Pipitone, L. J.; Donatelli, G.; Krishnamurty, D. M.; Baker, J. P.; Marohn, M. R.; Kalloo, A. N. (Endoscopy, 2009)