References

Solomon G.S.,  Johnston K.M., Lovell M.R. (2006) The Heads Up on Sport Concussion. USA: Human Kinetics

http://www.necksolutions.com/whiplash-neck-pain.html

http://www.nda.ox.ac.uk/wfsa/html/u05/u05_010.htm#para

http://www.tmjpainsolutions.com/about-tmj/tmj-pains-headache-jaw-face-pains/

http://www.advancedchiropracticcmch.com/pinched-nerve-nerve-impingement-syndrome/