1. Department of Production engineering, UTP University of Sciences and Technology, Bydgoszcz, Poland
2. Elias University Emergency Hospital, Bucharest Romania, Romania
3. Rehabilitation Medicine Department, Carol Davila University of Medicine and Pharmacy, Bucureşti, Romania
4. Neurorehabilitation Unit, University of East London, London, UK
5. Technische Universität Berlin, Berlin, Germany
6. Department of Machine Elements and Tribology, Politehnica University of Bucharest, Bucureşti, Romania