1. Department of Medicine (DIMED), Geriatrics Division, University of Padova, Padova, Italy;
2. Respiratory Pathophysiology Division, University of Padova, Padova, Italy;
3. National Research Council, Neuroscience Institute, Padova, Italy;
4. SER - Epidemiological Department, Veneto Region, Padova, Italy;
5. Department of Cardiac, Thoracic and Vascular Sciences, Biostatistics, Epidemiology and Public Health Unit, University of Padova, Italy