1. Division of Geriatric and Intensive Care Medicine, Careggi Hospital and University of Florence, Florence
2. Section of Geriatrics, Department of Medical Sciences, University of Turin, Città della Salute e della Scienza, Molinette, Turin, Italy
3. Discipline of Medical Gerontology and Falls and Syncope Unit, Mercer's Institute for Successful Ageing, St. James's Hospital, Dublin, Ireland