A European multicentre PET study of fibrillar amyloid in Alzheimer's disease. od 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