1. Division of Pulmonary, Allergy, and Critical Care, Department of Medicine, Duke University School of Medicine, Durham, NC
2. Department of Medicine, Durham Veterans Affairs Medical Center, Durham, NC
3. Duke Global Health Institute, Duke University, Durham, NC
4. Center of Innovation to Accelerate Discovery and Practice Transformation (ADAPT), Durham Veteran Affairs Health Care System, Durham, NC
5. Institute for Medical Research, Durham, NC
6. Department of Population Health Sciences, Duke University, Durham, NC