Randomized, crossover clinical trial on the safety, feasibility, and usability of the ABLE exoskeleton: A comparative study with knee-ankle-foot orthoses - Antonio Rodríguez-Fernández; Joan Lobo-Prat; Mariona Tolrà-Campanyà; Florentina Pérez-Cañabate; Josep M. Font-Llagunes; Lluis Guirao-Cano (PLoS ONE, 2025)