Sustained cholinesterase inhibition in AD patients receiving rivastigmine for 12 months. - Darreh-Shori,T.; Almkvist,O.; Guan,ZZ.; Garlind,A.; Strandberg,B.; Svensson,AL.; Soreq,H.; Hellstrom-Lindahl,E.; Nordberg,A. (Neurology, 2002)