Diggs, B. S., Mullins, R. J., Hedges, J. R., Arthur, M., & Newgard, C. D. (2008). Proportion of Seriously Injured Patients Admitted to Hospitals in the US with a High Annual Injured Patient Volume: A Metric of Regionalized Trauma Care. Journal of the American College of Surgeons, 206(2), 212-219. https://doi.org/10.1016/j.jamcollsurg.2007.08.019

Diggs, Brian S., Richard J. Mullins, Jerris R. Hedges, Melanie Arthur, and Craig D. Newgard. "Proportion of Seriously Injured Patients Admitted to Hospitals in the US with a High Annual Injured Patient Volume: A Metric of Regionalized Trauma Care." Journal of the American College of Surgeons 206, no. 2 (2008): 212-219. https://doi.org/10.1016/j.jamcollsurg.2007.08.019.

Diggs, Brian S., et al. "Proportion of Seriously Injured Patients Admitted to Hospitals in the US with a High Annual Injured Patient Volume: A Metric of Regionalized Trauma Care." Journal of the American College of Surgeons, vol. 206, no. 2, 2008, pp. 212-219, https://doi.org/10.1016/j.jamcollsurg.2007.08.019.