Preterm birth is the greatest cause of neonatal mortality and morbidity, with infants born extremely preterm at highest risk. Author Brett J. Manley, PhD, the Royal Women’s Hospital, Melbourne, Australia, discusses a new study of the effect of intratracheal corticosteroid administration on survival free of bronchopulmonary dysplasia in preterm infants, with JAMA Deputy Editor Tracy A. Lieu, MD, MPH.

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Preventing obesity in early childhood is challenging for clinicians and families. Authors Eliana M. Perrin, MD, MPH, of Johns Hopkins University, and William J. Heerman, MD, MPH, of Vanderbilt University, join JAMA Deputy Editor Tracy Lieu, MD, to discuss "A Digital Health Behavior Intervention to Prevent Childhood Obesity: The Greenlight Plus Randomized Clinical Trial."

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A new study published in JAMA found that drug-related supply chain issue reports were 40% less likely to result in meaningful drug shortages in Canada compared with the US. Authors Kate Suda, PharmD, MS, of University of Pittsburgh School of Medicine, and Mina Tadrous, PharmD, PhD, of University of Toronto, discuss this and more with JAMA Deputy Editor Joseph S. Ross, MD, MHS.

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• Differences in Drug Shortages in the US and Canada
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