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Koehne P, Hochhaus F, Felderhoff-Mueser U, Ring-Mrozik E, Obladen M, Bührer C.Koehne P, et al.Childs Nerv Syst. 2002 Apr;18(3-4):137-41. doi: 10.1007/s00381-002-0567-2. Epub 2002 Mar 22.Childs Nerv Syst. 2002.PMID: 11981620