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2. Functional neurosurgery in the treatment of multiple sclerosis;Arsalo, A.; Hanninen, A.; Laitiken, L.;Ann Clin Res,1973
3. Stereotaktische Operationen zur Behandlung des Tremors der Multipele Sklerose;Riechert, T.; Richter, D.;Schw Arch Neurol Neurochir Psychiat,1972
4. Diagnosis and classification of multiple sclerosis;McDonald, W.I.; Halliday, A.W.;Br Med Bull,1977
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