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2. Centers for Disease Control and Prevention. Injury prevention and control: data and statistics (WISQARS). http://www.cdc.gov/ncipc/wisqars.
3. Geriatric trauma: patterns, care and outcomes;Kauder,2004
4. Centers for Disease Control and Prevention. Injury center. Injuries among older adults. http://www.cdc.gov/ncipc/olderadults.htm. in press.