1. University of Ferrara, Ferrara, Italy
2. Family Pediatrician, FIMP, Genoa, Italy
3. Dept. of Prevention, LHU North-West Tuscany, Italy
4. University of Sassari, Sassari, Italy
5. University of Foggia, Foggia, Italy
6. University of Pisa, Pisa, Italy
7. University of Florence, Florence, Italy
8. Family Pediatrician, FIMP, Florence, Italy