Limited duration of the effect of methylprednisolone on changes on MRI in multiple sclerosis - Barkhof, F.; Tas, M. W.; Frequin, S. T. F. M.; Scheltens, P.; Hommes, O. R.; Nauta, J. J. P.; Valk, J. (Springer, 1994)
http://dx.doi.org/10.1007/BF00612124
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