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aFrom the Department of Pediatrics and Communicable Diseases, University of Michigan Health System, Ann Arbor
bDepartment of Medicine, Division of Allergy and Clinical Immunology, the Johns Hopkins School of Medicine, Baltimore
Reprint requests: Michael D. Cabana, MD, MPH, Division of General Pediatrics, University of Michigan Health System, 6-D-19 NIB, Box 0456, 300 North Ingalls St, Ann Arbor, MI 48109-0456.
Supported in part by National Heart Lung and Blood Institute grant HL70771 (MDC) and National Institute for Allergy and Infectious Diseases grant T32AI07056 (TTL).
Disclosure of potential conflict of interest: M. Cabana—none disclosed. T. T. Le is a paid consultant to and has stock ownership in Medsn, Inc, a professional medical education and training company.