Terry Dean, MD, PhD, is an attending physician in the Division of Critical Care Medicine at Children's National Hospital. He attained a PhD degree in Neuroscience, and aims to continue down the career path of the physician scientist, with specific interest in the role of sleep and circadian rhythms on the cellular mechanisms of regeneration after brain injury. Dr. Louis Bell is Chief of the Division of General Pediatrics and Associate Chair for Clinical Activities at Children's Hospital of Philadelphia.