Leuzy A, Chiotis K, Lemoine L, et al. Tau PET imaging in neurodegenerative tauopathies – still a challenge. Mol Psychiatry. 2019; 24(8):1112-1134. Doi: 10.1038/s41380-018-0342-8. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6756230/