1. The American Academy of Orofacial Pain. Orofacial pain: guidelines for assessment, diagnosis, and management;Okeson,1996
2. The neurophysiologic basis of pain;Casey,1973
3. Acute vs. chronic pain–an overview;Auvenshine;Tex Dent J,2000
4. Chronicity of orofacial pain;Gerschman;Ann R Australas Coll Dent Surg,2000
5. Functional somatic syndromes: one or many?;Wessely;Lancet,1999