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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Thomas S., Acton C., Nixon J., Battistutta D., Pitt W. R., Clark R. Effectiveness of bicycle helmets in preventing head injury in children: case-control study. BMJ. 1994 Jan 15;308(6922):173–176. doi: 10.1136/bmj.308.6922.173. [DOI] [PMC free article] [PubMed] [Google Scholar]