Longitudinal course of normal aging and progressive dementia of the Alzheimer's type: a prospective study of 106 subjects over a 3.6 year mean interval. - Reisberg,B.; Ferris,S.H.; Shulman,E.; Steinberg,G.; Buttinger,C.; Sinaiko,E.; Borenstein,J.; de Leon,M.J.; Cohen,J. (Prog Neuropsychopharmacol Biol Psychiatry, 1986)