[1] Los Angeles Cty & Univ Southern Calif, Dept Emergency Med, Med Ctr, Los Angeles, CA USA
[2] Boston Univ, Sch Med, Dept Emergency Med, Boston, MA 02118 USA
[3] Univ Calif Los Angeles, David Geffen Sch Med, Dept EM, Los Angeles, CA 90095 USA
[4] Univ Texas Southwestern Med Ctr Dallas, Dept Emergency Med, Dallas, TX 75390 USA
[5] Med Coll Wisconsin, Dept Emergency Med, Milwaukee, WI 53226 USA
[6] Emory Univ, Sch Med, Dept Emergency Med, Atlanta, GA USA
[7] Baylor Coll Med, Dept Emergency Med, Houston, TX 77030 USA
[8] NCI, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA
[9] Stanford Univ, Sch Med, Dept Emergency Med, Palo Alto, CA 94304 USA
[10] Icahn Sch Med Mt Sinai, Dept Emergency Med, New York, NY 10029 USA
[11] Yale Univ, Sch Med, Dept Emergency Med, New Haven, CT USA
[12] Univ Colorado, Sch Med, Dept Emergency Med, Denver, CO USA
[13] Columbia Univ, Dept Emergency Med, Med Ctr, New York, NY USA
[14] Univ Calif Riverside, Sch Med, Riverside, CA 92521 USA
[15] Univ Massachusetts Med Sch Baystate, Dept Emergency Med, Springfield, MA USA