1. Department of Drug Sciences, University of Pavia, Via G. Previati 74 20149 Milano c/o S.A.V.E., Pavia, Italy
2. S.A.V.E. Studi Analisi Valutazioni Economiche S.r.l., Health Economics & Outcomes Research, Milan, Italy
3. Novartis Farma, Origgio, VA, Italy
4. Department of Medical Specialties, Pneumology Unit, Arcispedale Santa Maria Nuova- IRCCS, Azienda USL di Reggio Emilia, Reggio Emilia, Italy