Down syndrome with and without dementia: An in vivo proton Magnetic Resonance Spectroscopy study with implications for Alzheimer's disease. - Melissa Lamar; Catherine M. L. Foy; Felix Beacher; Eileen M. Daly; Michaela Poppe; Nicola Archer; Vee Prasher; Kieran C. Murphy; Robin G. Morris; Andrew Simmons 001; Simon Lovestone; Declan G. M. Murphy (NeuroImage, 2011)