The outcome of decompression surgery for lumbar herniated disc is influenced by the level of concomitant preoperative low back pain. - Kleinstueck FS; Fekete T; Jeszenszky D; Mannion AF; Grob D; Lattig F; Mutter U; Porchet F; Kleinstueck, F S; Fekete, T; Jeszenszky, D; Mannion, A F; et al. (European Spine Journal, 2011)