The Alzheimer's Disease Cooperative Study: Validity and reliability of the Alzheimer's Disease Cooperative Study - Clinical Global Impression of Change. - Schneider,L.S.; Olin,J.T.; Doody,R.S.; Clark,C.M.; Morris,J.C.; Reisberg,B.; Schmitt,F.A.; Grundman,M.; Thomas,R.G.; Ferris,S.H. (Alzheimer Dis Assoc Dis, 1997)