1. INSERM and Montpellier University Institute Desbrest of Epidemiology and Public Health IDESP Montpellier France
2. First Division of Pneumology High Speciality Hospital V. Monaldi and University Federico II Medical School Naples Napoli Italy
3. Division of Respiratory and Allergic Diseases Department of Chest Diseases High Specialty A. Cardarelli Hospital Napoli Italy
4. Medical School of Specialization in Respiratory Diseases University on Naples Federico II Napoli Italy