1. Department of Pulmonology and Critical Care, Langone Medical Center, Bellevue Hospital, New York University, New York, NY, USA
2. Department of Intensive Care Adults, Erasmus MC University Medical Center, Rotterdam, the Netherlands
3. Division of Pulmonary, Allergy and Critical Care, Columbia University College of Physicians and Surgeons, University Medical Center, New York, NY, USA
4. Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile