1. Ear Nose Throat Department, General Hospital of Thessaloniki ‘G. Papanikolaou’, Thessaloniki GR‑57010, Greece
2. Department of Pulmonology, I.M. Sechenov First Moscow State Medical University, Moscow 119992, Russian Federation
3. Ear Nose Throat Department, General Hospital of Goumenissa, Kilkis GR‑61100, Greece
4. Ear Nose Throat Department, General Hospital of Katerini, Katerini GR‑60100, Greece
5. Ear Nose Throat Department, General Hospital of Thessaloniki ‘G. Gennimatas’, Thessaloniki GR‑54635, Greece
6. Department of Medicine, Laboratory of Medical Biology and Genetics, Aristotle University of Thessaloniki, Thessaloniki GR‑54124, Greece
7. Pulmonary Department, General Hospital of Thessaloniki ‘G. Papanikolaou’, Aristotle University of Thessaloniki, Thessaloniki GR‑57010, Greece