1. Division of Infectious Disease & International Medicine, Department of Medicine, University of Minnesota, Minneapolis
2. Department of Medicine, Regions Hospital, St. Paul, Minnesota
3. Division of Infectious Diseases, Department of Medicine, University of Kansas
4. HealthPartners Institute for Education and Research, Minneapolis
5. Division of Infectious Disease, Department of Medicine, Regions Hospital, St. Paul, Minnesota
6. Department of Medicine, University of Minnesota, Minneapolis
7. Department of Medicine, Minneapolis Veterans Affairs Medical Center, Minneapolis, USA