1 Unit of Occupational Rehabilitation and Ergonomics, S. Maugeri Foundation, IRCCS, Scientific Institute of Veruno (NO), Italy. giorgio.ferriero@fsm.it.
2 Unit of Occupational Rehabilitation and Ergonomics, S. Maugeri Foundation, IRCCS, Scientific Institute of Veruno (NO), Italy.
3 University of Ss. Cyril and Methodius, Trnava, Slovak Republic.