1. Division of Respiratory Diseases, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), San Matteo, Pavia, Italy
2. Pediatric Clinic, Fondazione IRCCS San Matteo, Pavia, Italy
3. Internal Medicine Department, IRCCS Azienda Ospedaliera Universitaria (AOU) San Martino—Istituto Scientifico Tumori (IST), Genoa, Italy