Harmonizing late-life cognitive performance data across two population-based cohort studies: The Health and Retirement Study and National Health and Aging Trends Study. - Chen D; Sekhon VK; Roth DL; Freedman VA; Schrack JA; Spira AP; Wickwire EM; Albrecht JS; Malhotra A; Kaufmann CN; Gross AL (Alzheimer's & dementia (Amsterdam, Netherlands), 2025)