Familial spongiform encephalopathy associated with a novel prion protein gene mutation - Nitrini, Ricardo; Rosemberg, Sérgio; Passos-Bueno, Maria Rita; Silva, Luís S Teixeira; Iughetti, Paula; Papadopoulos, Maria; Carrilho, Paulo M; Caramelli, Paulo; Albrecht, Steffen; Zatz, Mayana; Le Blanc, Andrea (Annals of Neurology, 1997)