Trends in helmet use by motorcycle riders in the decades following the repeal of mandatory helmet laws
JL Phillips, TL Overton, M Campbell-Furtick… - … journal of injury …, 2017 - Taylor & Francis
Several US states repealed universal motorcycle helmet laws in the 1990s and 2000s. The
purpose of this study was to examine national trends in helmet use among adult trauma …
purpose of this study was to examine national trends in helmet use among adult trauma …