1. Faculty of Medicine , ‘Ovidius’ University of Constanta- Doctoral School of Medicine , Constanta , Romania
2. Clinical Hospital of Pneumophtisiology , Constanta , Romania
3. Department of Pulmonology Constanta County Clinical Emergency Hospital ‘Sf. Apostol Andrei’
4. Department of Dermatology Constanta County Clinical Emergency Hospital ‘Sf. Apostol Andrei’