1. Department of Life Sciences, University of Trieste, Trieste, Italy.
2. Department of Laboratory Medicine, Microbiology CS, Azienda Ospedaliero-Universitaria “Ospedali Riuniti,” Trieste, Italy.
3. Division of Infective Diseases, Azienda Ospedaliero-Universitaria “Ospedali Riuniti,” Trieste, Italy.
4. Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.