TY - JOUR A1 - Hale, J.M. A1 - Schneider, D.C. A1 - Mehta, N.K. A1 - Myrskyla, M. T1 - Cognitive impairment in the US: Lifetime risk, age at onset, and years impaired Y1 - 2020 DO - 10.1016/j.ssmph.2020.100577 VL - 100577 ER -