1. Department of Medicine and Surgery, LUM University, 70100 Casamassima, Italy
2. Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
3. Department of Geriatrics and Orthopedics, Università Cattolica del Sacro Cuore, 00168 Roma, Italy
4. Department of Physiology and Aging, University of Florida, Gainesville, FL 32610, USA