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Mitchener A, Wyper DJ, Patterson J, Hadley DM, Wilson JT, Scott LC, Jones M, Teasdale GM.Mitchener A, et al. Among authors: wyper dj.J Neurol Neurosurg Psychiatry. 1997 Jun;62(6):633-6. doi: 10.1136/jnnp.62.6.633.J Neurol Neurosurg Psychiatry. 1997.PMID: 9219753Free PMC article.