1 Department of Respiratory Medicine and Allergology, Hospital de la Santa Creu i Sant Pau, Institute of Sant Pau Biomedical Research, Universitat Autònoma de Barcelona, Barcelona, Spain. Electronic address: ecurto@santpau.cat.
2 Department of Respiratory Medicine and Allergology, Hospital de la Santa Creu i Sant Pau, Institute of Sant Pau Biomedical Research, Universitat Autònoma de Barcelona, Barcelona, Spain.
3 Pharmacy Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.