1. Hygiene Unit, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy
2. Nursing Unit, Primary Care and Community Medicine Department of Forlì-Cesena, Romagna Local Health Authority, 47521 Cesena, Italy
3. Romagna Local Health Authority, Cesena-Valle Savio Health District, 47522 Cesena, Italy
4. Nursing Unit, Primary Care and Community Medicine Department of Forlì-Cesena, Romagna Local Health Authority, 47121 Forlì, Italy