[1] Univ Illinois, Chicago, IL 60607 USA
[2] Advocate Christ Med Ctr, Dept Emergency Med, Oak Lawn, IL 60453 USA
[3] Northwestern Univ, Feinberg Sch Med, Dept Emergency Med, Chicago, IL USA
[4] Wake Forest Univ, Bowman Gray Sch Med, Dept Emergency Med, Winston Salem, NC USA
[5] Tufts Univ, Sch Med, Boston, MA 02111 USA
[6] Maine Med Ctr, Dept Emergency Med, Portland, ME 04102 USA
[7] Ronald Reagan UCLA Med Ctr, Los Angeles, CA USA
[8] Univ Calif Los Angeles, Dept Emergency Med, Los Angeles, CA USA
[9] St Louis Univ, Dept Emergency Med, St Louis, MO 63103 USA
[10] NYU, Sch Med, New York, NY USA
[11] NYU Langone Hlth, New York, NY USA