[1] Poznan Univ Phys Educ, Dept Adapted Phys Act, Poznan, Poland
[2] Adam Mickiewicz Univ, Dept Psychol, Poznan, Poland
[3] Jan Kochanowski Univ, Coll Med, Kielce, Poland
[4] Univ Szczecin, Szczecin, Poland
[5] Med Univ Bialystok, Dept Neurol, Bialystok, Poland
[6] Med Univ Warsaw, Dept Neurol, Warsaw, Poland
[7] Univ Rzeszow, Coll Med Sci, Rzeszow, Poland
[8] Med Univ Silesia, Dept Neurol, Katowice, Poland
[9] Mil Inst Med Poland, Warsaw, Poland
[10] Miedzyleski Specialist Hosp, Dept Neurol & Neurorehabil, Warsaw, Poland
[11] Pomeranian Med Univ, Szczecin, Poland
[12] Clin Trial Ctr MS Patients, Szczecin, Poland
[13] Clin Prov Hosp 2 St Jadwiga Krolowej Rzeszow, Rzeszow, Poland