Dystonia and Tremor Induced by Peripheral Trauma:Predisposing Factors
JNNP 51:1512-1519, Jankovic,J.&VanDer Linden,C., 1988
Trauma and Multiple Sclerosis:A Population-Based Cohort Study from Olmsted County, Minnesota
Neurol 43:1878-1882, 18711993., Siva,A.,et al, 1993