1. Division of Pulmonary, Critical Care, and Sleep Medicine and Physiology, Department of Medicine, University of California, La Jolla, California
2. Division of Pulmonary and Sleep Medicine. Hospital Universitario de la Princesa, Universidad Autónoma de Madrid, Madrid, España
3. Herbert Wertheim School of Public Health and Longevity Sciences, University of California, San Diego, La Jolla, California
4. Section of Pulmonary and Critical Care, VA San Diego, La Jolla, California
5. Translational Research Unit, IIS Aragón, Hospital Universitario Miguel Servet, Zaragoza, Spain
6. Health Sciences, Department of Respiratory Therapy, Victor Valley College, Victorville, California
7. Center for Physiological Genomics of Low Oxygen, University of California, La Jolla, California
8. CIBERES Instituto Salud Carlos III, and Department of Medicine, University of Zaragoza School of Medicine, Zaragoza, Spain