1. Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Chile.
2. Laboratorio de Inmunología Traslacional, Departamento de Bioquímica Clínica e Inmunología, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile.
3. Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, Boston (MA) USA.
4. Facultad de Medicina, Universidad de Concepción, Concepción, Chile.
5. Translational Research in Respiratory Medicine (TRRM) Group, Hospital Universitari Arnau de Vilanova-Santa Maria, IRBLleida, Lleida, España.
6. Centro de Investigación Biomedica En Red de Enfermedades Respiratorias – CIBERES – Madrid, España.
Submitted: 3 October 2021.
Accepted: 19 February 2022.
Study carried out at the Hospital Clínico Regional Dr. Guillermo Grant Benavente, Concepción, Chile, and the Complejo Asistencial Dr. Víctor Ríos Ruiz,
Los Ángeles, Chile.

Correspondence to:
Gonzalo Labarca. Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital and Harvard Medical School, 221 Longwood Avenue, Boston, MA, USA.
Tel.: 1 617 955-2145. Email: glabarca@bwh.harvard.edu
Financial support: This study received financial support from the National Research and Development Agency (ANID, COVID1005), Government of Chile, and the CIBERESUCICOVID Project, Instituto de Salud Carlos III (COV20/00110, ISCIII), Madrid, Spain.