Associations between sex and lifestyle activities with cognitive reserve in mid-life adults with genetic risk for Alzheimer’s disease by Qi, Q, Deng, F, Sammon, R, Ritchie, K, Muniz-Terrera, G, Koychev, I, Malhotra, P, Hutchinson, S, Robinson, D, O’Brien, JT, Ritchie, CW, Lawlor, B, Naci, L