The value of instrumental gait analysis in elderly healthy, MCI or Alzheimer’s disease subjects and a comparison with other clinical tests used in single and dual-task conditions - Gillain, S; Warzee, E; Lekeu, F; Wojtasik, V; Maquet, D; Croisier, JL; Salmon, E; Petermans, J (Ann Phys Rehabil Med, 2009)