[1] Univ Florida, Coll Med Jacksonville, Div Pediat Emergency Med, Dept Emergency Med, Jacksonville, FL 32209 USA
[2] Univ Florida, Hlth Sci Ctr Jacksonville, Jacksonville, FL 32209 USA
[3] Univ Michigan, Med Sch, Dept Pediat, Ann Arbor, MI USA
[4] Univ Michigan, Med Sch, Dept Emergency Med, Ann Arbor, MI USA
[5] Pediat Emergency & Trauma Nursing, Jacksonville, FL USA
[6] Univ Penn, Dept Pediat, Perelman Sch Med, Philadelphia, PA USA
[7] UCLA, David Geffen Sch Med, Lundquist Inst Biomed Innovat, Harbor UCLA, Los Angeles, CA USA