In vivo study of acetylcholine esterase in basal forebrain, amygdala, and cortex in mild to moderate Alzheimer disease. - Karl Herholz; S. Weisenbach; Gerhard Zündorf; O. Lenz; H. Schröder; B. Bauer; Elke Kalbe; Wolf-Dieter Heiss (NeuroImage, 2004)