1. The Center for Injury Research and Policy, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio, USA
2. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
3. Department of Community and Behavioral Health, Colorado School of Public Health, Aurora, Colorado, USA
4. Department of Epidemiology and Health Statistics, Xiangya College of Public Health, Central South University, Changsha, Hunan, China
5. Division of Epidemiology, College of Public Health, The Ohio State University, Columbus, Ohio, USA
6. Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, Ohio, USA