1. Arnold LS, Tefft BC (2015) Prevalence of self-reported drowsy driving. AAA Foundation for Traffic Safety, United States. https://aaafoundation.org/wp-content/uploads/2017/12/PrevalenceOfSelfReportedDrowsyDrivingReport.pdf. Accessed 1 July 2016
2. Cryer PC, Westrup S, Cook AC, Ashwell V, Bridger P, Clarke C (2001) Investigation of bias after data linkage of hospital admissions data to police road traffic crash reports. Injury Prev 7(3):234–241
3. Grant RJ, Gregor MA, Maio RF, Huang SS (1998) The accuracy of medical records and police reports in determining motor vehicle crash characteristics. Prehosp Emerg Care 2(1):23–28
4. Greenberg L (1996) Police accident report (PAR) quality assessment project. National Technical Information Service. https://ntrl.ntis.gov/NTRL/dashboard/searchResults/titleDetail/PB97135313.xhtml. Accessed 1 July 2016
5. Knipling RR, Wang JS (1995) Revised estimates of the US drowsy driver crash problem size based on general estimates system case reviews. Annual proceedings of the Association for the Advancement of Automotive Medicine, vol 39. Association for the Advancement of Automotive Medicine