1. Classification of chronic pain: descriptions of chronic pain syndromes and definition of pain terms;Merskey,1994
2. Neuropathic orofacial pain;Benoliel;Compend Contin Educ Dent,1998
3. Orofacial pain: guidelines for assessment, classification, and management;Okeson,1996
4. Symptoms and signs in patients with suspected neuropathic pain;Rasmussen;Pain,2004
5. The international classification of headache disorders, 2nd edition;Olesen;Cephalalgia,2004