1. Agency for Healthcare Research and Quality, 2014. Healthcare Cost and Utilization Project (HCUP). Overview of Hospital Stays in the United States, 2012 (Statistical Brief #180). Available at: 〈https://www.hcup-us.ahrq.gov/reports/statbriefs/sb180-Hospitalizations-United-States-2012.jsp〉. (Accessed 12 January 2018).
2. Aninao J., Bloedel R., 2009. Graduated Licensing of Teenage Drivers. The Ohio Legislative Service Commission Staff. Available at: 〈http://www.lsc.state.oh.us/membersonly/128teenagedrivers.pdf〉.(Accessed 28 July 2017).
3. Graduated driver license nighttime compliance in US teen drivers involved in fatal motor vehicle crashes;Carpenter;Acc. Anal. Prev.,2013
4. Vital signs: health burden and medical costs of nonfatal injuries to motor vehicle occupants – United States, 2012;Centers for Disease Control and Prevention;MMWR,2014
5. Centers for Disease Control and Prevention, 2013. National Center for Health Statistics. International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM). Available at: 〈https://www.cdc.gov/nchs/icd/icd9cm.htm〉. (Accessed 12 January 2018).