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Barrett KM, Freeman WD.Barrett KM, et al.Neurology. 2010 Jan 12;74(2):e9-10. doi: 10.1212/WNL.0b013e3181c918a0.Neurology. 2010.PMID: 20065244No abstract available.
Barrett KM, Freeman WD.Barrett KM, et al.Mayo Clin Proc. 2008 Jun;83(6):708-11. doi: 10.4065/83.6.708.Mayo Clin Proc. 2008.PMID: 18533088No abstract available.