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Eich-Höchli D, Niklowitz M, Eich P, Zellweger U, Opravil M.Eich-Höchli D, et al.Nervenarzt. 2001 Mar;72(3):216-23. doi: 10.1007/s001150050741.Nervenarzt. 2001.PMID: 11268766German.