[1] Univ Genoa, Dept Hlth Sci, Genoa, Italy
[2] San Martino Univ Hosp Genoa, Hyg Unit, Genoa, Italy
[3] San Martino Univ Hosp Genoa, Risk Management Unit, Genoa, Italy
[4] San Martino Univ Hosp Genoa, Div Infect Dis, Genoa, Italy
[5] San Martino Univ Hosp Genoa, Hlth Direct, Genoa, Italy
[6] San Martino Univ Hosp Genoa, Hosp Epidemiol & Hyg Unit, Genoa, Italy
[7] San Martino Univ Hosp Genoa, Informat Syst Unit, Genoa, Italy