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Dyfyniad Arddull ChicagoCarter, Patrick M., Lisa Buckley, Carol A. C Flannagan, Jessica B. Cicchino, Mark Hemmila, Patrick J. Bowman, Farideh Almani, and C. Raymond Bingham. "The Impact of Michigan’s Partial Repeal of the Universal Motorcycle Helmet Law On Helmet Use, Fatalities, and Head Injuries." Am J Public Health 2017.
Dyfyniad MLACarter, Patrick M., et al. "The Impact of Michigan’s Partial Repeal of the Universal Motorcycle Helmet Law On Helmet Use, Fatalities, and Head Injuries." Am J Public Health 2017.