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APA Citation
Filippi, M., Rovaris, M., Capra, R., Gasperini, C., Prandini, F., Martinelli, V., Horsfield, M. A., Bastianello, S., Sormani, M. P., Pozzilli, C., & Comi, G. (1999). interferon β treatment for multiple sclerosis has a graduated effect on MRI enhancing lesions according to their size and pathology. Journal of neurology, neurosurgery and psychiatry, 67(3), 386–389. http://access.bl.uk/ark:/81055/vdc_100135569288.0x00003a