Back Pain

BBC Health
http://www.bbc.co.uk/health/conditions/back_pain/

Family doctor
http://familydoctor.org/117.xml

National Institute of Health
http://www.ninds.nih.gov/disorders/backpain/backpain.htm

American Chiropracters Association
http://www.amerchiro.org/media/whatis/benefits.shtml

Mayo Clinic
http://www.mayoclinic.com/health/back-pain/DS00171