1 Department of Medicine, Division of Hospital Medicine, Northwestern Memorial Hospital, Feinberg School of Medicine, Chicago, Illinois.
2 Department of Pediatrics, Division of Hospital-Based Medicine, Ann & Robert H Lurie Children's Hospital of Chicago, Feinberg School of Medicine, Chicago, Illinois.
3 Department of Pediatrics, Division of Infectious Diseases, Ann & Robert H Lurie Children's Hospital of Chicago, Feinberg School of Medicine, Chicago, Illinois.
4 Department of Medicine, Division of General Internal Medicine, University of Washington School of Medicine, Seattle, Washington.