1 Don Carlo Gnocchi ONLUS Foundation, Milan, Italy.
2 Don Carlo Gnocchi ONLUS Foundation, Milan, Italy; Board of Physical Medicine and Rehabilitation, Department of Orthopaedic Science, "Sapienza" University, Rome, Italy.
3 Department of Geriatrics, Neurosciences and Orthopaedics, Università Cattolica del Sacro Cuore, Rome, Italy.
4 Don Carlo Gnocchi ONLUS Foundation, Milan, Italy; Board of Physical Medicine and Rehabilitation Unit, Sant'Andrea Hospital, "Sapienza" University, Rome, Italy.
6 Don Carlo Gnocchi ONLUS Foundation, Milan, Italy; Department of Geriatrics, Neurosciences and Orthopaedics, Università Cattolica del Sacro Cuore, Rome, Italy.