Patients with Alzheimer's disease have reduced activities in midlife compared with healthy control-group members. - Friedland,R.P.; Fritsch,T.; Smyth,K.A.; Koss,E.; Lerner,A.J.; Chen,C.H.; Petot,G.J.; Debanne,S.M. (Proc Natl Acad Sci U S A, 2001)