P. Riekkinen1, M. Riekkinen1, P. Jäkälä, J. Sirviö1, R. Lammintausta2
1Department of Neurology, Departments of Neurology and Pathology, University of Kuopio Canthia Building P.O. Box 1627, SF-70211 Kuopio, Finland
2Orion Corporation Farmos, Turku, Finland