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Tang G, Cawley CM, Dion JE, Barrow DL.Tang G, et al. Among authors: barrow dl.J Neurosurg. 2002 Jun;96(6):993-9. doi: 10.3171/jns.2002.96.6.0993.J Neurosurg. 2002.PMID: 12066933Clinical Trial.
Barnes B, Cawley CM, Barrow DL.Barnes B, et al. Among authors: barrow dl.Neurosurg Clin N Am. 2002 Jul;13(3):289-97, v. doi: 10.1016/s1042-3680(02)00015-3.Neurosurg Clin N Am. 2002.PMID: 12486919Review.