Radat, F., Sakh, D., Lutz, G., El Amrani, M., Massiou, H., & Bousser, M. (1998). Importance of anxiety and depression co-morbidity in migraine patients with chronic substance abuse: a case/control study. [French]. Annales Medico-Psychologiques, 156(8), 562–565. http://www.elsevier.com/inca/publications/store/6/2/2/2/8/8/