1. Center for Cervical Cancer Screening, AO City of Health and Science; Turin Italy
2. Center for Cancer Epidemiology and Prevention; Turin Italy
3. Unit of Pathology, OIRM S. Anna Hospital, AO City of Health and Science; Turin Italy
4. Department of Medical Sciences; University of Turin; Turin Italy
5. Unit of Medical Statistics and Cancer Epidemiology; Department of Translational Medicine; Center for Cancer Epidemiology and Prevention Piedmont, University of Eastern Piedmont; Novara Italy
6. Cancer Epidemiology, Center for Experimental Research and Medical Studies, University of Turin; Turin Italy