1 Department of Epidemiology and Health Statistics, School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563006, China.
2 Center for Medical Records Management, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China.
3 Department of Burns and Plastic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China.
4 Department of Epidemiology and Health Statistics, School of Public Health, Zunyi Medical University, Zunyi, Guizhou 563006, China; Center for Injury Research and Policy, Center for Pediatric Trauma Research, The Research Institute at Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH, USA.