Affiliation: | 1. Department of Emergency Medicine, Vanderbilt University, 1313 21st Ave S, Nashville, TN 37232, United States;2. Department of Emergency Medicine, Northwestern University Feinberg School of Medicine, 303 E Chicago Ave, Chicago, IL 60611, United States;3. Department of Emergency Medicine and Cardiovascular Research Institute, Wayne State University, 540 E Canfield St, Detroit, MI 48201, United States |