Variability in Cognitive Performance on Mobile Devices Is Sensitive to Mild Cognitive Impairment: Results From the Einstein Aging Study. - Eric S. Cerino; Mindy J. Katz; Cuiling Wang; Jiyue Qin; Qi Gao; Jinshil Hyun; Jonathan G. Hakun; Nelson A. Roque; Carol A. Derby; Richard B. Lipton; Martin J. Sliwinski (Frontiers Digit. Health, 2021)