A European multicentre PET study of fibrillar amyloid in Alzheimer's disease. por Nordberg, A, Carter, S, Rinne, J, Drzezga, A, Brooks, D, Vandenberghe, R, Perani, D, Forsberg, A, Långström, B, Scheinin, N, Karrasch, M, Någren, K, Grimmer, T, Miederer, I, Edison, P, Okello, A, Van Laere, K, Nelissen, N, Vandenbulcke, M, Garibotto, V, Almkvist, O, Kalbe, E, Hinz, R, Herholz, K