*Center for Injury Research and Policy, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio;
†Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania;
‡The Ohio State University, College of Medicine, Columbus, Ohio; and
§Child Injury Prevention Alliance, Columbus, Ohio.
Corresponding Author: Gary A. Smith, MD, DrPH, Center for Injury Research and Policy, The Research Institute at Nationwide Children's Hospital, 700 Children's Dr, Columbus, OH 43205-2696 ([email protected]).
The Ohio State University's Mayers Scholarship in Natural and Mathematical Sciences, a research fund for undergraduate students, provided a financial stipend for author C.E.G. while he worked on this study. The opinions expressed in this article do not necessarily reflect those of the funding organization.
The authors report no conflicts of interest.
Received December 31, 2012
Accepted September 10, 2013
