[1] Keck Sch Med USC, Los Angeles Gen Med Ctr, Dept Emergency Med, Los Angeles, CA USA
[2] Univ Calif San Francisco, Dept Emergency Med, San Francisco, CA USA
[3] Univ Calif San Diego, Sch Med, UC San Diego Hlth & Rady Childrens Hosp, Dept Emergency Med, San Diego, CA USA
[4] Univ Calif San Diego, Sch Med, UC San Diego Hlth & Rady Childrens Hosp, Dept Pediat, San Diego, CA USA
[5] Univ Texas Austin, Dell Med Sch, Dept Pediat, Austin, TX USA
[6] UCLA, David Geffen Sch Med, Harbor UCLA Med Ctr, Dept Emergency Med, Los Angeles, CA USA
[7] Univ South Carolina, Dept Emergency Med, Div Chief Pediat Emergency Med, Prisma Hlth,Sch Med, Greenville, SC USA
[8] Indiana Univ Sch Med, Dept Emergency Med, Indianapolis, IN USA
[9] Indiana Univ Sch Med, Dept Pediat, Indianapolis, IN USA
[10] Childrens Hosp Los Angeles, Div Emergency & Transport Med, Los Angeles, CA USA
[11] Univ Vermont, Larner Coll Med, Dept Emergency Med & Pediat, Burlington, VT USA
[12] Univ Texas Austin, Dell Med Sch, Dept Pediat, US Acute Care Solut, Canton, OH USA
[13] Univ Alabama Birmingham, Dept Pediat, Div Emergency Med, Birmingham, AL USA
[14] Lincoln Med Ctr, Bronx, NY USA
[15] Weill Cornell Med, New York, NY USA
[16] UCLA, David Geffen Sch Med, Dept Emergency Med, Los Angeles, CA USA
[17] UCLA, David Geffen Sch Med, Dept Pediat, Los Angeles, CA USA
[18] Harbor UCLA, Lundquist Inst Biomed Innovat, Torrance, CA USA
[19] Keck Sch Med USC, LosAngeles Gen Med Ctr, Los Angeles, CA 90033 USA