ACWT - Cortelli,P.; Perani,D.; Parchi,P.; Grassi,F.; Montagna,P.; De Martin,M.; Castellani,R.J.; Tinuper,P.; Gambetti,P.; Lugaresi,E.; Fazio,F. - Cerebral metabolism in fatal familial insomnia: relation to duration, neuropathology, and distribution of protease-resistant prion protein. - Neurology 1997 Jul; 49(1): 126-33