1. Board of Physical Medicine and Rehabilitation, Department of Orthopaedic Science; “Sapienza” University; Rome Italy
2. Don Gnocchi Foundation; Milan Italy
3. Department of Geriatrics; Neurosciences and Orthopaedics, Universit` Cattolica del Sacro Cuore; Rome Italy
4. Physical Medicine and Rehabilitation Unit; Azienda Policlinico Umberto I; Rome Italy