1. Pneumologia, University Hospital Shefqet Ndroqi, Tirana, Albania
2. Nurse Department, Tirana Medical University, Tirana, Albania
3. University Hospital Madre Teresa, Tirana, Albania
4. Nurse Course, Kristal University, Tirana, Albania
5. Fisiopatologia Respiratoria, Azienda Ospedaliera Senese, Policlinico delle Scotte, Viale Bracci 3, 53100 Siena, Italy