J.K. van Meirhaeghe1, S. Lauwagie1, P. Fransen, D. Morelli, N. Craig, F. Collignon: Lumbar Spinal Stenosis Treatment with APERIUS® Percutaneous Interspinous Device (INCA Trial)’, Paper presented at the International Society for the Advancement of Spine Surgery, April 26 – 29, 2011 Las Vegas, Nevada, USA