Affiliation: | 1. Department of Emergency Medicine, Washington University in St Louis School of Medicine, Emergency Care Research Core, St Louis, MO, USA;2. Department of Emergency Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA;3. BerbeeWalsh Department of Emergency Medicine, University of Wisconsin-Madison, Madison, WI, USA;4. Department of Emergency Medicine, Yale School of Medicine, New Haven, CT, USA |