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Urculo E, Martinez L, Arrazola M, Ramirez R.Urculo E, et al.Neurosurgery. 1995 Apr;36(4):776-9. doi: 10.1227/00006123-199504000-00019.Neurosurgery. 1995.PMID: 7596509
Urculo E, Arrazola M, Arrazola M Jr, Riu I, Moyua A.Urculo E, et al.J Neurosurg. 1996 Mar;84(3):522-5. doi: 10.3171/jns.1996.84.3.0522.J Neurosurg. 1996.PMID: 8609569
Urculo E, Samprón N, Alfaro R, Arrazola M, Linazasoro G.Urculo E, et al.Neurocirugia (Astur). 2008 Apr;19(2):156-60.Neurocirugia (Astur). 2008.PMID: 18500414Spanish.
Samprón N, Arrazola M, Urculo E.Samprón N, et al. Among authors: urculo e.Neurocirugia (Astur). 2009 Oct;20(5):478-83.Neurocirugia (Astur). 2009.PMID: 19830373Spanish.