title: Response.
authors.affiliation: Respiratory Department, Hospital Universitario y Politécnico La Fe, Valencia, Spain; CIBER de enfermedades respiratorias, Madrid, Spain. Electronic address: mianmartinezgarcia@gmail.com.
authors.forename: Miguel Ángel
authors.initials: MÁ
authors.lastname: Martínez-García
authors.affiliation: Hospital Universitario Valme, Seville, Spain.
authors.forename: Francisco
authors.initials: F
authors.lastname: Campos-Rodriguez
authors.affiliation: Respiratory Department, Institut de Recerca Biomédica (IRBLleida), Leida, Spain; CIBER de enfermedades respiratorias, Madrid, Spain.
authors.forename: Ferrán
authors.initials: F
authors.lastname: Barbé