1 Department of Internal Medicine and Therapeutics, University of Pavia and Infectious Diseases Unit, Department of Medical Sciences and Infectious Diseases, Fondazione IRCCS Policlinico San Matteo and Division of Infectious Diseases II and Immunology, Department of Medical Sciences and Infectious Diseases, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
2 Department of Internal Medicine and Therapeutics, University of Pavia and Division of Infectious Diseases II and Immunology, Department of Medical Sciences and Infectious Diseases, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
3 Infectious Diseases Unit, IRCCS "San Matteo" and Department of Medical, Surgical, Diagnostic and Paediatric Science, University of Pavia, Pavia, Italy.