1. Public Health Department, University of Naples Federico II, 80131 Naples, Italy
2. Unit of Physical and Rehabilitative Medicine, Department of Medical and Surgical Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy
3. Med-Ex Medicine & Exercise S.R.L, 00187 Rome, Italy
4. Public Health Department, University of Naples Federico II, 80131 Naples, Italy; Med-Ex Medicine & Exercise S.R.L, 00187 Rome, Italy