In-Phase Bilateral Upper Limb Exercises Improve Cognitive and Motor Functions in Progressive Multiple Sclerosis: A Pilot Randomized Controlled Trial. - Sokratous, Dimitris; Charalambous, Charalambos Costa; Pantzaris, Marios; Michailidou, Kyriaki; Konstantinou, Nikos (Brain Sciences (2076-3425), 2026)