[1] Azienda Osped Univ Modena, Infect Dis Unit, Modena, Italy
[2] Univ Modena & Reggio Emilia, Infect Dis Unit, Modena, Italy
[3] Azienda Osped Univ Policlin, Gastroenterol Unit, Modena, Italy
[4] Azienda Osped Univ Policlin, Dept Anaesthesia, Intens Care Unit, Modena, Italy
[5] Univ Modena & Reggio Emilia, Hepatopancreato Bil Surg & Liver Transplantat Unit, Modena, Italy
[6] Azienda Osped Univ Modena, Infect Dis Unit, Largo Pozzo 71, I-41124 Modena, Italy