1. Immunology Laboratory, Department of Pneumonology, Aristotle University of Thessaloniki, “Georgios Papanikolaou” Hospital, Thessaloniki, Greece.
2. Department of Microbiology, Aristotle University of Thessaloniki, University Hospital AHEPA, Thessaloniki, Greece.
3. Department of Pneumonology, Aristotle University of Thessaloniki, “Georgios Papanikolaou” Hospital, Thessaloniki, Greece.
4. 1st Department of Pneumonology, “Georgios Papanikolaou” Hospital, Thessaloniki, Greece.
5. 2nd Department of Pneumonology, “Georgios Papanikolaou” Hospital, Thessaloniki, Greece.