[1] Univ Calif San Francisco, Dept Emergency Med, 550 16th St,Box 0649, San Francisco, CA 94143 USA
[2] Childrens Hosp Philadelphia, Dept Pediat, Div Emergency Med, Philadelphia, PA USA
[3] Texas Childrens Hosp, Dept Pediat, Div Emergency Med, Houston, TX USA
[4] Childrens Natl Hosp, Dept Pediat, Div Emergency Med, Washington, DC USA
[5] Univ Calif Los Angeles, David Geffen Sch Med, Dept Emergency Med, Los Angeles, CA USA
[6] Univ Calif Los Angeles, David Geffen Sch Med, Dept Pediat, Los Angeles, CA USA
[7] Harbor Univ Calif Los Angeles, Med Ctr, Dept Emergency Med, Los Angeles, CA USA
[8] Harbor Univ Calif Los Angeles, Med Ctr, Dept Pediat, Los Angeles, CA USA
[9] Harbor Univ Calif, Lundquist Inst Biomed Innovat, Los Angeles, CA USA
[10] Weill Cornell Med Coll, Dept Emergency Med, New York, NY USA
[11] Weill Cornell Med Coll, Dept Pediat, New York, NY USA
[12] Los Angeles Cty Univ Southern Calif Med Ctr, Dept Emergency Med, Los Angeles, CA USA
[13] Univ Texas Austin, Dell Med Sch, Dept Pediat, US Acute Care Solut, Canton, OH USA
[14] Amer Coll Emergency Phys, Dept Clin Affairs, Irving, TX USA
[15] Univ Alabama Birmingham, Dept Pediat, Div Emergency Med, Birmingham, AL USA
[16] Nationwide Childrens Hosp, Dept Pediat, Div Emergency Med, Columbus, OH USA
[17] Lincoln Med Ctr, Div Emergency Med, Bronx, NY USA