Depressive Symptoms and Hypothalamic-Pituitary-Adrenal Axis (HPA) Function as Predictors for Clinical Outcome after Lumbar Spine Stabilization and Fusion Surgery - Bellut, D.; Mutter, U.; Mannion, A. F.; Richter, A.; Porchet, F. (Journal of Neurological Surgery Part A: Central European Neurosurgery, 2012)