Association between helmets and facial injury after a motorcycle collision: an analysis of more than 40 000 patients from the National Trauma Data Bank.
Crompton JG, Oyetunji TA, Pollack KM, Stevens K, Cornwell EE, Efron DT, Haut ER, Haider AH. Association between helmets and facial injury after a motorcycle collision: an analysis of more than 40 000 patients from the National Trauma Data Bank. Arch Surg. 2012 Jul; 147(7):674-6.