1. Department of Anesthesia, Critical Care and Pain Medicine
2. Biomedical Engineering Program, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
3. Department of Anesthesiology and Intensive Care, Kyoto Prefectural University of Medicine, Kyoto, Japan; and
4. Department of Medicine (Pulmonary and Critical Care), Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
5. Department of Radiology, and
6. CIBER de Enfermedades Respiratorias, Madrid, Spain
7. Department of Medicine (Pulmonary and Critical Care), Massachusetts General Hospital, and