1. Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania;
2. Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada;
3. School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania;
4. Department of Critical Care and Anaesthesia, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia;
5. Nuffield Department of Medicine, Oxford University, Oxford, United Kingdom;
6. Mahidol–Oxford Tropical Medicine Research Unit (MORU), Mahidol University, Bangkok, Thailand;
7. Department of Intensive Care, Amsterdam University Medical Centers, Amsterdam, The Netherlands;
8. Division of Pulmonary & Critical Care Medicine, Atrium Health, Charlotte, North Carolina