Clinical validity of increased cortical uptake of [18F]flortaucipir on PET as a biomarker for Alzheimer's disease in the context of a structured 5-phase biomarker development framework. - Wolters, E. E.; Dodich, A.; Boccardi, M.; Corre, J.; Drzezga, A.; Hansson, O.; Nordberg, A.; Frisoni, G. B.; Garibotto, V.; Ossenkoppele, R. (European Journal of Nuclear Medicine & Molecular Imaging, 2021)