[1] Univ Cincinnati, Cincinnati Childrens Hosp Med Ctr, Coll Med, Div Emergency Med, Cincinnati, OH USA
[2] Univ Cincinnati, Coll Med, Dept Pediat, Cincinnati, OH USA
[3] Baylor Coll Med, Dept Pediat, Sect Emergency Med, Houston, TX USA
[4] Univ Penn, Childrens Hosp Philadelphia, Perelman Sch Medx, Div Emergency Med, Philadelphia, PA USA
[5] Univ Penn, Perelman Sch Med, Dept Pediat, Philadelphia, PA USA
[6] Univ Utah, Primary Childrens Hosp, Div Emergency Med, Salt Lake City, UT USA
[7] Univ Utah, Dept Pediat, Salt Lake City, UT USA
[8] Boston Childrens Hosp, Med Crit Care, Boston, MA USA
[9] Baylor Coll Med, Sect Emergency Med, Houston, TX 77030 USA
[10] Texas Childrens Hosp, Houston, TX 77030 USA
[11] Childrens Hosp Assoc, Lenexa, KS USA
[12] Advocate Childrens Hosp, Dept Emergency Med, Park Ridge, IL USA
[13] Case Western Reserve Univ, Div Pediat Emergency Med, Univ Hosp Rainbow Babies & Children, Cleveland, OH 44106 USA
[14] Connecticut Childrens Med Ctr, Div Pediat Crit Care, Storrs, CO USA
[15] Univ Connecticut, Storrs, CO USA
[16] Childrens Hosp Orange Cty, Orange, CA 92668 USA