1. University of Naples “Federico II”,Dept. of Electrical Engineering and Information Technologies,Naples,Italy
2. Clinical and Scientific Institutes Maugeri SPA SB,Bioengineering Unit,Pavia,Italy
3. Clinical and Scientific Institutes Maugeri SPA SB,Neurology Unit,Pavia,Italy
4. Rehabilitation and Functional Recovery Unit, Clinical and Scientific Institutes Maugeri SPA SB,Pavia,Italy
5. Officine Ortopediche Tombolini,Taranto,Italy