[1] Infin Healthcare Inc, Mequon, WI 53092 USA
[2] Med Coll Wisconsin, Dept Emergency Med, Milwaukee, WI 53226 USA
[3] Indiana Univ, Sch Med, Dept Emergency Med, Indianapolis, IN USA
[4] Oregon Hlth & Sci Univ, Dept Emergency Med, Portland, OR 97201 USA
[5] Northwestern Univ, Div Emergency Med, Chicago, IL 60611 USA
[6] Washington Hosp Ctr, Dept Emergency Med, Washington, DC 20010 USA
[7] Morristown Mem Hosp, Dept Emergency Med, Morristown, NJ USA
[8] Community Mem Hosp, Emergency Dept, Menomonee Falls, WI USA
[9] St Marys Hosp Ozuakee, Dept Emergency Med, Mequon, WI USA