1 First Division of Infectious Diseases, Cotugno Hospital, Naples, Italy.
2 Clinic for Infectious and Tropical Diseases, Clinical Center of Serbia, Belgrade, Serbia.
3 Faculty of Medicine, University of Belgrade, Belgrade, Serbia.
4 Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.
5 Department of Medical Microbiology and Infection Control, Franciscus Gasthuis & Vlietland, Rotterdam, Netherlands.
6 Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.