1. Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
2. Division of Infectious Diseases, Department of Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
3. School of Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
4. Pulmonary and Critical Care, University of Utah School of Medicine, Salt Lake City, Utah, USA
5. Department of Medicine, George E. Wahlen Veterans Affairs Medical Center, Salt Lake City, Utah, USA