For even more in depth information on chiropractic visit these sites:

http://en.wikipedia.org/wiki/Chiropractic

http://www.amerchiro.org/

http://www.chirobase.org/

http://www.nlm.nih.gov/medlineplus/chiropractic.html

http://www.chiroweb.com/

http://www.chiropractic.org/