TY - JOUR AU - Weinstein, J N; Lurie, J D; Tosteson, T D TI - Surgical versus nonoperative treatment for lumbar disc herniation: four-year results for the Spine Patient Outcomes Research Trial (SPORT) JO - Spine (Phila Pa 1976) VL - 33 PY - 2008 DO - 10.1097/BRS.0b013e31818ed8f4 L3 - PubMed-ID: 19018250 SP - 2789 EP - 2800 ER -