1. Research Centre on Public Health, University of Milano- Bicocca, Monza, Italy
2. IRCCS Multimedica, Sesto San Giovanni, Italy
3. Clinical Epidemiology and Public Health Research Unit, Burlo Garofolo Institute for Maternal and Child Health, Trieste, Italy
4. Department of Cardiovascular, Endocrine-metabolic Disease, Istituto Superiore di Sanità, Rome, Italy