Searching for the "Active Ingredients" in Physical Rehabilitation Programs Across Europe, Necessary to Improve Mobility in People With Multiple Sclerosis: A Multicenter Study.

Kalron A, Feys P, Dalgas U, Smedal T, Freeman J, Romberg A, Conyers H, Elorriaga I, Gebara B, Merilainen J, Heric-Mansrud A, Jensen E, Jones K, Knuts K, Maertens de Noordhout B, Martic A, Normann B, O Eijnde B, Rasova K, Santoyo Medina C, Baert I.