Prevalent versus incident progressive supranuclear palsy: An analysis of the frequencies of neuropathological and clinical features at U.S. Alzheimer's Disease Research Centers indicate a relatively common tauopathy of aging. - Cushing BJ; Shahidehpour RK; Abner EL; Jicha GA; Neltner JM; Breig MK; Teodorescu KL; Neltner AM; Coskun EP; Kovacs GG; Nelson PT (Research square, 2026)