Outbreak of Acute Hepatitis A involving young men in Lombardy region, Italy: Risk factors, clinical and virological characteristics. Issue 1 (February 2018) - Iavarone, M.; Viganò, M.; Orcese, C.; Coen, M.; Oggioni, C.; Spinetti, A.; Soria, A.; Galli, C.; Tagliacarne, C.; Scaramella, L.; Merli, M.; Rossotti, R.; et al.