Comparison of insufflation vs. retractional technique for laparoscopic-assisted intervertebral fusion of the lumbar spine. - Hannon,J.K.; Faircloth,W.B.; Lane,D.R.; Ronderos,J.F.; Snow,L.L.; Weinstein,L.S.; West,J.L 3rd. (Surg Endosc, 2000)