OCULOMOTOR DEFICITS IN PREMANIFEST AND EARLY HUNTINGTON'S DISEASE AND THEIR STRUCTURAL BRAIN CORRELATES: THE LONGITUDINAL TRACK-HD STUDY - Hicks, S; Scahill, R; Dumas, E; Durr, A; Blair, R; Levitt, B; Roos, R; Tabrizi, S; Kennard, C (2012)