1. Division of Infectious Diseases, Department of Pediatrics, University of Washington, Seattle, Washington;
2. Seattle Children's Research Institute, Seattle, Washington;
3. Boston Combined Residency Program in Pediatrics, Boston Children's Hospital, Boston, Massachusetts;
4. Office of Antibiotic Stewardship, Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Atlanta, Georgia; and
5. Division of Pediatric Infectious Diseases, Department of Pediatrics, University of Utah, Salt Lake City, Utah