1. Department of Geriatrics, Neuroscience and Orthopedics, Teaching Hospital “Agostino Gemelli,” Catholic University of the Sacred Heart School of Medicine, Rome, Italy.
2. Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Bari, Italy.
3. Division of Biology of Aging, Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, Florida.
4. Department of Surgery, Catholic University of the Sacred Heart School of Medicine, Rome, Italy.