1. Section of Pulmonary Diseases, Critical Care, and Environmental Medicine, Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA.
2. Department of Biostatistics and Data Science, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA.
3. Division of Pulmonary Sciences and Critical Care Medicine, Denver Health Medical Center, Denver, CO.
4. Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.