1 Biophysics and Bioengineering Department, School of Medicine, University of Barcelona, Spain.
2 Centro de Investigación Biomédica en Red (CIBER) Enfermedades Respiratorias, Madrid, Spain; Sleep Unit, Respiratory Department, Hospital Clínic, Barcelona, Spain.
3 Biophysics and Bioengineering Department, School of Medicine, University of Barcelona, Spain; Centro de Investigación Biomédica en Red (CIBER) Enfermedades Respiratorias, Madrid, Spain; Institut d'Investigacions Biomèdiques Pi i Sunyer (IDIBAPS), Barcelona, Spain; School of Medicine and Health Sciences, University of Barcelona, Spain.
4 Centro de Investigación Biomédica en Red (CIBER) Enfermedades Respiratorias, Madrid, Spain; Sleep Unit, Respiratory Department, Hospital Clínic, Barcelona, Spain; Institut d'Investigacions Biomèdiques Pi i Sunyer (IDIBAPS), Barcelona, Spain; School of Medicine and Health Sciences, University of Barcelona, Spain. Electronic address: jmmontserrat@ub.edu.