1. Abenhaim L, Rossignol M, Valat JP, et al. (2000) The role of activity in the therapeutic management of back pain Report of the international Paris task force on back pain. Spine 25:S1–S33
2. ACC, The National Health Committee (1997) New Zealand acute low back pain guide. Wellington, New Zealand; available at: http://www.nzgg.org.nz/library/gl_complete/backpain1/. accessed June 5, 2002
3. Agency for Health Care Administration and The Florida Department of Health (1999) University of Florida patients with low back pain or injury: Medical practice guidelines. Tallahassee, FL
4. Amstrong MP, McDonough S, Baxter GD (2003) Clinical guidelines versus clinical practice in the management of low back pain. Int J Clin Pract 57:9–13
5. Anderson GBJ (1999) Epidemiological features of chronic low-back pain. Lancet 354:581–585