[1] Univ Washington, Sch Med, 1959 NE Pacific St, Seattle, WA 98195 USA
[2] Seattle Childrens Hosp, Dept Emergency Med, 4800 Sand Point Way NE, Seattle, WA USA
[3] Boston Univ, Chobanian & Avedisian Sch Med, 72 East Concord St, Boston, MA USA
[4] Boston Med Ctr, Dept Emergency Med, One Boston Med Ctr Pl, Boston, MA 02118 USA
[5] Amer Med Assoc, Chicago, IL USA
[6] Univ Tennessee, Hlth Sci Ctr, Coll Med, 910 Madison Ave,Ste 1031, Memphis, TN USA
[7] Brown Univ, Alpert Med Sch, 222 Richmond St, Providence, RI USA
[8] Lifespan, 80 Dudley St, Providence, RI USA
[9] Providence VA Med Ctr, 830 Chalkstone Ave, Providence, RI USA