“Age-specific and sex-specific prevalence of cerebral {beta}-amyloidosis, tauopathy, and neurodegeneration in cognitively unimpaired individuals aged 50–95 years: a cross-sectional study,” by Clifford R. Jack Jr., Heather J. Wiste, Stephen D. Weigand, Terry M. Therneau, David S. Knopman, Val Lowe, Prashanthi Vemuri, Michelle M. Mielke, Rosebud O. Roberts, Mary M. Machulda, Matthew L. Senjem, Jeffrey L. Gunter, Walter A. Rocca, and Ronald C. Petersen (Vol. 16, No. 6, June 2017, p. 435-444).
www.thelancet.com/journals/laneur/article/PIIS1474-4422(17)30077-7/abstract