[1] Univ Florida, Dept Hlth Outcomes & Biomed Informat, Gainesville, FL USA
[2] Nationwide Childrens Hosp, Abigail Wexner Res Inst, Columbus, OH USA
[3] Washington Univ St Louis, Sch Med, Dept Pediat, Div Emergency Med, St Louis, MO USA
[4] Childrens Hosp Philadelphia, Dept Pediat, Div Emergency Med, Philadelphia, PA USA
[5] Univ Calif Sacramento, Davis Sch Med, Dept Emergency Med, Sacramento, CA USA
[6] Univ New Mexico Hlth Sci Ctr, Dept Emergency Med, Div Pediat Emergency Med, Albuquerque, NM USA
[7] St Christophers Hosp Children, Philadelphia, PA USA
[8] Ohio State Univ, Nationwide Childrens Hosp, Dept Pediat, Div Emergency Med,Coll Med, Columbus, OH USA
[9] Univ Florida, Dept Hlth Outcomes & Biomed Informat, 2004 Mowry Rd,Room 3224, Gainesville, FL 32611 USA