[1] Reg Environm Protect Agcy Piedmont, Epidemiol Serv, Turin, Italy
[2] CPO Piedmont, Canc Epidemiol Unit, Turin, Italy
[3] Rome E Local Hlth Author, Dept Epidemiol, Rome, Italy
[4] Local Hlth Author, Epidemiol Unit, Milan, Italy
[5] Univ Pisa, Dept Biol, Pisa, Italy
[6] Local Hlth Author, Dept Prevent, Cagliari, Italy
[7] Reg Hlth Author, Dept Publ Hlth, Epidemiol Observ, Palermo, Italy
[8] ISPO Florence, Inst Canc Study & Prevent, Florence, Italy
[9] Local Hlth Author, Dept Publ Hlth, Epidemiol Observ, Bologna, Italy
[10] Local Hlth Author, Stat & Epidemiol Unit, Taranto, Italy
[11] Local Hlth Author, Dept Planning & Dev, Informat Syst Unit, Venice, Italy