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Matthews RT, Yang L, Browne S, Baik M, Beal MF (1998) Coenzyme Q10 administration increases brain mitochondrial concentrations and exerts neuroprotective effects. Proc Natl Acad Sci USA 95: 8892–8897. PLoS ONE | www.plosone.org 14 January 2012 | Volume 7 | Issue 1 | e30589