1. Research Centre on Asthma and COPD, Department of Medical SciencesUniversity of Ferrara Ferrara Italy
2. Department of Cardiac Thoracic Vascular Sciences and Public HealthUniversity of Padova Padova Italy
3. Cros NT Verona Italy
4. Department of Medicine and SurgeryUniversity of Insubria and Fondazione Maugeri Varese Italy