[1] Nationwide Childrens Hosp, Res Inst, Ctr Injury Res & Policy, 700 Childrens Dr, Columbus, OH 43205 USA
[2] Childrens Hosp Philadelphia, Div Gen Pediat, Philadelphia, PA 19104 USA
[3] Cent Ohio Poison Ctr, Columbus, OH USA
[4] Ohio State Univ, Coll Med, Dept Pediat, Columbus, OH 43210 USA
[5] Child Injury Prevent Alliance, Columbus, OH USA