Proton MRS of mitochondrial diseases: Analysis of brain metabolic abnormalities and their possible diagnostic relevance. - Bianchi,C.M.; Tossetti,M.; Battini,R.; Manca,L.M.; Mancuso,M.; Cioni,G.; Canapicchi,R.; Siciliano,G. (AJNR Am J Neuroradiol, 2003)