Two years ago, 10-year-old kimberlee Ann Palmer of Portland, Oregon, frightened and depressed by her father's suicide, picked up her brother's .22-caliber rifle and shot herself in the head. Kim-berlee was one of hundreds of American children between the ages of 5 and 14 who kill themselves each year with firearms―a statistic that prompted Mathew Miller of the Harvard Injury Control Research Center to investigate how much the availability of guns contributes to child suicides. His results have led to a heated debate on statistical methods.
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