P4‐309: BRAIN B‐AMYLOID IN COGNITIVELY NORMAL SUBJECTS IS A PREDICTOR OF EARLY POSTOPERATIVE COGNITIVE DYSFUNCTION. (1st July 2014) - Brzezinski, Marek; Gregersen, Maren; Aparici, Carina Mari; Kornak, John; Kim, Hubert; Kramer, Joel H.; Terrando, Niccolo; Eriksson, Lars I.; Kukreja, Jasleen; Maze, Mervyn; Weiner, Michael Walter