1. Târgu Jiu County Emergency Hospital , Department of Allergology and Clinical Immunology , Târgu Jiu , Romania
2. ”Carol Davila” University of Medicine and Pharmacy, Faculty of Medicine , Bl. 8 Eroii Sanitari, District 5 , Bucharest , Romania
3. ”Tudor Vlaimirescu” Pneumology Hospital , Runcu, Gorj , Romania
4. Târgu Jiu County Emergency Hospital, Pneumology Department , Târgu Jiu , Romania
5. ”Marius Nasta” Institute of Pneumoftiziology , Bucharest , Romania