1. Department of Intensive Care Medicine, St. James’s Hospital, Multidisciplinary Intensive Care Research Organisation (MICRO), Dublin, Ireland
2. Trinity College Dublin, Dublin, Ireland
3. CIBER of Respiratory Diseases (CIBERES), Institute of Health Carlos III, Madrid, Spain
4. Pulmonary Department, Hospital Clinic, Universitat de Barcelona, IDIBAPS, ICREA, Barcelona, Spain