1. Microbiology and Virology Section, Interdisciplinary Department of Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
2. Department of Clinical Disciplines, School of Technical Medical Sciences, “Alexander Xhuvani” University of Elbasan, 3001 Elbasan, Albania
3. Respiratory Rehabilitation Unit, Clinical Scientific Institutes Maugeri (IRCCS), 70124 Bari, Italy