1. Christina L. Tupe is a clinical instructor, Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland. Bethany A. Weiler is a pulmonary critical care fellow and Avelino C. Verceles is an assistant professor, Division of Pulmonary, Critical Care and Sleep Medicine, University of Maryland School of Medicine. Michael T. McCurdy is an assistant professor, Department of Emergency Medicine and Critical Care, University of Maryland School of Medicine.