[1] USF Morsani Coll Med, Lehigh Valley Hlth Network, Dept Emergency Med, Allentown, PA 18105 USA
[2] Univ Hosp Case Med Ctr, Dept Emergency Med, Cleveland, OH USA
[3] Brown Univ, Dept Emergency Med, Warren Alpert Med Sch, Providence, RI 02912 USA
[4] Univ S Florida, Dept Emergency Med, Morsani Coll Med, Tampa, FL USA
[5] Yale Univ, Sch Med, Dept Emergency Med, New Haven, CT USA
[6] USF Morsani Coll Med, Valley Hlth Network, Dept Surg, Sect Geriatr Trauma Lehigh, Allentown, PA USA