1 Division of Pediatric Respiratory Medicine, McGill University Health Centre Research Institute, Montreal Children's Hospital, Montreal, QC, Canada. Electronic address: adam.shapiro@muhc.mcgill.ca.
2 Department of Pediatrics, Marsico Lung Institute, University of North Carolina School of Medicine, Chapel Hill, NC.
3 Department of Pediatrics, University Hospital Muenster, Muenster, Germany.
4 Research Center Sacre-Coeur Hospital, University of Montreal, Montreal, QC, Canada; Department of Clinical Affairs & Practice Guidelines, Infectious Disease Society of America, Arlington, VA.
5 Department of Medicine, Marsico Lung Institute, University of North Carolina School of Medicine, Chapel Hill, NC.