Affiliation: | aDepartment of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia 30322, USA bDivision of Environmental Health Sciences, School of Public Health, The Ohio State University, Columbus, Ohio 43210, USA cDivision of Biostatistics, School of Public Health, The Ohio State University, Columbus, Ohio 43210, USA dCenter for Injury Research and Policy, Columbus Children's Hospital, Columbus, Ohio 43205, USA |