[1] Univ Arizona, Dept Emergency Med, Tucson, AZ 85721 USA
[2] Univ Arizona, Banner Univ Med Ctr, Tucson, AZ 85721 USA
[3] Thomas Jefferson Univ, Dept Emergency Med, Philadelphia, PA 19107 USA
[4] Mt Sinai St Lukes Mt Sinai Roosevelt, Dept Emergency Med, Icahn Sch Med Mt Sinai, New York, NY USA
[5] Kings Cty Hosp, Dept Emergency Med, Suny Downstate Med Ctr, Brooklyn, NY USA
[6] Spectrum Hlth, Dept Emergency Med, Grand Rapids, MI USA
[7] Univ Hosp Cleveland, Med Ctr, Dept Emergency Med, Cleveland, OH 44106 USA
[8] Presence Resurrect Med Ctr, Emergency Dept, Chicago, IL USA
[9] Univ Noth Carolina, Dept Emergency Med, Carolinas Med Ctr, Sch Med, Charlotte, NC USA
[10] Cornell Univ, Weill Cornell Med Coll, Dept Emergency Med, Lincoln Med & Mental Hlth Ctr, Bronx, NY USA
[11] Univ Texas Austin, Dell Med Sch, Austin, TX 78712 USA
[12] Univ Wisconsin, Berbee Walsh Dept Emergency Med, Sch Med & Publ Hlth, Madison, WI USA
[13] Southern Illinois Univ, Div Emergency Med, Sch Med, Springfield, IL USA
[14] Univ Calif Irvine, Dept Emergency Med, Irvine, CA USA
[15] Louisiana State Univ, Emergency Med Residency Program, Baton Rouge, LA 70803 USA
[16] Univ S Florida, Dept Internal Med, Div Emergency Med, Tampa, FL USA
[17] Univ Calif San Francisco, Dept Emergency Med, Fresno, CA USA
[18] New York Methodist Hosp, Dept Emergency Med, New York, NY USA
[19] Univ Washington, Div Emergency Med, Seattle, WA 98195 USA
[20] Kern Med Ctr, Dept Emergency Med, Bakersfield, CA USA
[21] Dartmouth Hitchcock Med Ctr, Geisel Sch Med, Dept Emergency Med, Lebanon, NH 03766 USA