Corrigendum to "Which factors affect the choice of the inhaler in chronic obstructive respiratory diseases?" [YPUPT 31C (2015) 63–67]. (December 2015) - Scichilone, Nicola; Benfante, Alida; Bocchino, Marialuisa; Braido, Fulvio; Paggiaro, Pierluigi; Papi, Alberto; Santus, Pierachille; Sanduzzi, Alessandro