1Waddell G.Low back pain:a twentieth-century health care enigma.Spine, 1996,21:2820-2825.
2Buckwalter JA.Aging and degeneration of the human inter vertebral disc.Spine, 1995,20:1307-1314.
3Nishida K, Kang JD, Gilbertson LG, et al. 1999 Volvo award Winner in basic science studies, modulation of the biologic activity of the rabbit intervertebral disc by gene therapy: an in vivo study of adenovirus-mediated transfer of the human transforming growth factor β-1 encoding gene. Spine, 1999, 24: 2419-2425.