1. Post-traumatic headache;Obermann;Expert Rev Neurother,2009
2. Chronic post-traumatic headache: clinical, psychopathological features and outcome determinants;De Benedittis;J Neurosurg Sci,1983
3. Characteristics of chronic headaches after whiplash injury;Foletti;Presse Med,1995
4. The epidemiology of mild, uncomplicated brain injury;Kraus;J Trauma,1988