http://www.surgperspective.com/clinical-evaluation-of-an-internal-adjustable-retractor-in-laparoscopic-cholecystectomy/
IRCAD Team pulbished a study on their first experience with VERSA LIFTER in Surg Innov. 2014 Jan 9.
Dhumane P, Dallemagne B, Barry B, Perretta S, Leroy J, Mutter D, Marescaux J.. [Epub ahead of print] PMID:24406817
Read the Abstract: http://www.ncbi.nlm.nih.gov/pubmed/24406817