Naumann, Rebecca B., Stephen W. Marshall, Scott K. Proescholdbell, Anna Austin, and Kathleen Creppage. 2015. “Impact of North Carolina’s Motorcycle Helmet Law on Hospital Admissions and Charges for Care of Traumatic Brain Injuries.”
North Carolina Medical Journal 76 (2): 70–75.
https://doi.org/10.18043/ncm.76.2.70.