1. Department of Anesthesiology, University of Texas Health at San Antonio, San Antonio, Texas
2. Institute for Healthcare Delivery and Population Science, University of Massachusetts Medical School–Baystate, Springfield, Massachusetts
3. Division of Pulmonary, Critical Care, and Sleep Medicine, University of Miami Miller School of Medicine, Miami, Florida
4. Division of Critical Care Medicine, Albert Einstein College of Medicine, Bronx, New York
5. Division of Pulmonary, Allergy, Sleep and Critical Care Medicine, Boston University, Boston, Massachusetts
6. Department of Critical Care Medicine, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; and
7. Department of Anesthesia and Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada