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All-terrain vehicle legislation for children: a comparison of a state with and a state without a helmet law |
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| Authors: | Keenan Heather T Bratton Susan L |
| Institution: | Department of Social Medicine, University of North Carolina, Chapel Hill, North Carolina 27599-7240, USA. hkeenan@med.unc.edu |
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| 本文献已被 PubMed 等数据库收录！ | |