1 Department of Pediatric and Adolescent Medicine, Children's Hospital, University of Illinois Hospital & Health Sciences System, Chicago, Ill; Division of Hospital Medicine, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tenn; Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tenn. Electronic address: james.antoon@vumc.org.
2 Division of Clinical Pharmacology, Children's Mercy Hospitals and Clinics, Kansas City, Mo; Division of Infectious Diseases, Children's Mercy Hospitals and Clinics, Kansas City, Mo.
3 Division of Infectious Diseases, Children's Mercy Hospitals and Clinics, Kansas City, Mo.