1. New Zealand Acute Low Back Pain Guide;ACC and the National Health Committee,1997
2. Acute Low-back Problems in Adults. Clinical Practice Guideline Number 14;Agency for Health Care Policy and Research,1994
3. Understanding Acute Low Back Problems: Patient Guide. Consumer Version, Clinical Practice Guideline Number 14;Agency for Health Care Policy and Research,1994
4. The Back Book;Anon,1996
5. The Cochrane collaboration back review group;Bombardier;Spine,1997