Hamad Giselle G, Bergqvist David
Minimally Invasive Bariatric and General Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Surg Obes Relat Dis. 2007 Jan-Feb;3(1):97-102. doi: 10.1016/j.soard.2006.10.002. Epub 2006 Dec 27.