1. Clinic of Infectious Diseases, Department of Internal Medicine, Geriatrics & Nephrologic Diseases, S’Orsola Malpighi Hospital, University of Bologna, Bologna, Italy
2. Department of Infectious Diseases, Infection Control & Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
3. Division of Internal Medicine, Unit 1460, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, 77030, Houston, TX, USA