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2. Classification of chronic pain: descriptions of chronic pain syndromes and definition of pain terms. Prepared for the Taskforce on Taxonomy of the International Association for the Study of Pain;Merskey,1994
3. Cervical causes of headache and dizziness;Bogduk,1986
4. On the concept of third occipital headache;Bogduk;J Neurol Neurosurg Psychiatry,1986
5. The cervical zygapophyseal joints as a source of neck pain;Bogduk;Spine,1988