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Knosp E, Perneczky A, Koos WT, Fries G, Matula C.Knosp E, et al. Among authors: koos wt.Neurosurgery. 1996 Mar;38(3):434-42; discussion 442-4. doi: 10.1097/00006123-199603000-00003.Neurosurgery. 1996.PMID: 8837793
Ungersböck K, Aichholzer M, Günthner M, Rössler K, Görzer H, Koos WT.Ungersböck K, et al. Among authors: koos wt.Minim Invasive Neurosurg. 1997 Dec;40(4):134-8. doi: 10.1055/s-2008-1053434.Minim Invasive Neurosurg. 1997.PMID: 9477402