[1] Univ Hlth Sci, Brooke Army Med Ctr Uniformed Serv, Dept Emergency Med, Ft Sam Houston, TX USA
[2] United States Army Special Operat Command, New Orleans, LA USA
[3] Med Coll Wisconsin, Dept Emergency Med, Milwaukee, WI USA
[4] Tulane Univ, Celia Scott Weatherhead Sch Publ Hlth & Trop Med, Dept Social Behav & Populat Sci, New Orleans, LA USA
[5] Thomas Jefferson Univ, Jefferson Einstein Hosp Sidney Kimmel Med Coll, Dept Emergency Med, Philadelphia, PA USA
[6] Michigan State Univ Homer Stryker, Western Michgan Univ, Coll Human Med, EMS PLLC Dept Emergency Med,Sch Med, Kalamazoo, MI USA
[7] John Peter Smith Hosp, Dept Emergency Med, Ft Worth, TX 76104 USA
[8] Ft Worth Off Med Director, Ft Worth, TX 76104 USA