[1] Univ Rochester, Dept Emergency Med, Med Ctr, Rochester, NY 14627 USA
[2] Ohio State Univ, Wexner Med Ctr, Dept Emergency Med, Columbus, OH 43210 USA
[3] UTHlth McGovern Med Sch, Dept Anesthesiol, Houston, TX USA
[4] UTHlth McGovern Med Sch, Dept Emergency Med, Houston, TX USA
[5] Univ Calif San Diego, Dept Emergency Med, San Diego, CA 92103 USA
[6] Austin Travis Cty EMS, Off Chief Med Officer, Austin, TX USA
[7] Univ Rochester, Med Ctr, Dept Anesthesiol, Rochester, NY 14642 USA
[8] Univ Rochester, Med Ctr, Dept Emergency Med, Rochester, NY 14642 USA
[9] Univ Pittsburgh, Med Ctr, Dept Emergency Med, Pittsburgh, PA USA
[10] Med Coll Wisconsin, Dept Emergency Med, Milwaukee, WI 53226 USA