Geographic and Hospital Variation in Cost of Lumbar Laminectomy and Lumbar Fusion for Degenerative Conditions. Issue 2 (1st August 2017) - Zygourakis, Corinna C.; Liu, Caterina Y.; Wakam, Glenn; Moriates, Christopher; Boscardin, Christy; Ames, Christopher P.; Mummaneni, Praveen V.; Ratliff, John; Dudley, R. Adams; Gonzales, Ralph