[1] Baylor Coll Med, Dept Emergency Med, 2450 Holcombe Blvd,Suite 01Y, Houston, TX 77021 USA
[2] Baylor Coll Med, Dept Med, Sect Hlth Serv Res, 2450 Holcombe Blvd,Suite 01Y, Houston, TX 77021 USA
[3] Beaumont Hosp, Dept Emergency Med, 3601 West 13 Mile Rd, Royal Oak, MI 48073 USA
[4] Brigham & Womens Hosp, Dept Emergency Med, 75 Francis St,Neville House, Boston, MA 02115 USA
[5] Massachusetts Gen Hosp, Dept Emergency Med, 125 Nashua St,Suite 9206, Boston, MA 02114 USA
[6] 2450 Holcombe Blvd,Suite 01Y, Houston, TX 77021 USA