Dr F Pugliese, Bari, Italy
Università degli Studi di Cagliari, Cagliari, Italy
Azienda Ospedaliero-Universitaria Careggi, Firenze, Italy
Diagnostics and Consultation Center Convex EOOD,, Sofia, Bulgaria
Multiprofile Hospital for Active Treatment Sveti Ivan Rilski -2003 OOD, Dupnitsa, Bulgaria
Medical Center Plovdimed Ltd, Plovdiv, Bulgaria
Medical Center Iskar EOOD, Sofia, Bulgaria
Medical center, Vratsa, Bulgaria
DCC Convex Ltd., Sofia, Bulgaria
Research Site, Łomża, Poland
Larrey Hospital, Toulouse, France
LASERMED Diagnosis and Treatment Centre, Chelm, Poland
Children University Hospital - Pneumology and Rheumatology Dept, Lublin, Poland
Medical Centre Lucyna and Andrzej Dymek, Zawadzkie, Poland
Respiratory Physiopatology Unit, Mellino Mellini hospital, Chiari, Italy
Pneumology Department - San Paolo Hospital, Milan, Italy
Pneumology Unit, San Gerardo hospital, Monza, Italy