1. Laboratory of Molecular Microbiology and Biotechnology, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
2. Department of Medicine and Surgery, LUM University “Giuseppe Degennaro”, 70010 Casamassima, Italy
3. Infectious and Tropical Diseases Unit, Department of Medical Sciences, University Hospital of Siena, 53100 Siena, Italy
4. Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy