Fibromyalgia as a predictor of increased post-operative complications, readmission rates and hospital costs in patients undergoing posterior lumbar spine fusion - Donnally, C J, 3rd; Vakharia, R M; Rush, A J, 3rd; Damodar, D; Vakharia, A J; Goz, V; Lebwohl, N H (Spine (Phila Pa 1976)., 2019)