http://www.surgperspective.com/reduced-port-cholecystectomy-poster-wces-2014/
Pr. Luigi Boni presented a poster at WCES 2014. Title is: « Reduced port cholecystectomy using two trocars and adjustable endo-retractors » by Boni L, David G, Cassinotti E, Borroni G, Marzorati A, Spampatti S.