1. Department of Infectious Diseases; INMI; L Spallanzani; Rome; Italy
2. Institute of Infectious and Tropical Diseases; Department of Medicine; Surgery and Dentistry; San Paolo University Hospital; Milan; Italy
3. Institute of Infectious Diseases; University of Bari; Bari; Italy
4. Department of Infectious Diseases; Hospital San Giovanni Addolorata; Rome; Italy
5. Institute of Infectious Diseases; Policlinico Umberto I; Rome; Italy
6. Department of Infectious Diseases; Hospital of Rovigo; Rovigo; Italy
7. Department of Infectious Diseases; Hospital SS Annunziata, bagno a Ripoli; Florence; Italy