Brain Damage, Chronic Hemiplegia 1 Humans 1 Prospective Studies 1 Recovery of Function 1 Robotics 1 Stroke 1 Stroke Rehabilitation 1 Treatment Outcome 1 Upper Extremity 1 cerebrovascular accident 1 chronic brain disease 1 clinical trial 1 complication 1 controlled study 1 convalescence 1 hemiplegia 1 human 1 multicenter study 1 procedures 1 prospective study 1 randomized controlled trial 1 robotics 1 stroke rehabilitation 1 treatment outcome 1 upper limb 1