1 Department of Pharmacy, Children's Mercy Kansas City, Kansas City, MO, USA.
2 Antimicrobial Stewardship Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
3 Department of Pediatric Infectious Diseases and Department of Epidemiology, Children's Hospital Colorado and the University of Colorado School of Medicine, Aurora, CO, USA.
4 Division of Infectious Diseases, Children's Mercy Kansas City, Kansas City, MO.
5 University of Missouri-Kansas City School of Medicine, Kansas City, MO, USA.
6 Department of Pharmacy, Children's Hospital Colorado, Aurora, CO, USA.