Nadal, Núria
de Batlle, Jordi
Barbé, Ferran
Marsal, Josep Ramon
Sánchez-de-la-Torre, Alicia
Tarraubella, Nuria
Lavega, Merce
Sánchez-de-la-Torre, Manuel
Article History
Received: 8 March 2017
Revised: 31 July 2017
Accepted: 2 August 2017
First Online: 1 September 2017
Compliance with ethical standards
:
: This research was supported by Fondo de Investigación Sanitaria (PI 13/02004), Fondo Europeo de Desarrollo Regional (FEDER), Una manera de hacer Europa, the Spanish Respiratory Society (SEPAR), and Esteve-Teijin (Spain). Co-funded by Ministerio de Economía y Competitividad [COFUND2014-51501]. The sponsor had no role in the design or conduct of this research.
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.