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Association of British Neurologists (ABN) joint meeting with the Royal College of Physicians (RCP), London, 23–24 October 2013
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GREY MATTER AND CSF AMYLOID IN EARLY NON–DEMENTED PARKINSON'S DISEASE: THE INCIDENCE OF COGNITIVE IMPAIRMENT IN COHORTS WITH LONGITUDINAL EVALUATION IN PARKINSON'S DISEASE (ICICLE–PD) STUDY