Lower-limb amputees can reduce the energy cost of walking when assisted by an Active Pelvis Orthosis. - Elena Martini; Clara Beatriz Sanz-Morère; Chiara Livolsi; Andrea Pergolini; Gabri Arnetoli; Stefano Doronzio; Antonella Giffone; Roberto Conti; Francesco Giovacchini; Þ. Friðriksson; K. Lechler; Simona Crea; et al. (BioRob, 2020)