1 Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.
2 Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy.
3 Department of Woman and Child Health and Public Health - Public Health Area, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
4 Division of Public Health, Department of Family & Preventive Medicine, University of Utah School of Medicine, and Huntsman Cancer Institute, Salt Lake City, Utah, USA.
5 Stony Brook Cancer Center, Stony Brooke University, Stony Brook, New York, USA.
6 Department of Family, Population and Preventive Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, New York, USA.