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NEED TO KNOW

Blood test

  • Aired: 08/20/2010
  • 15:13
  • Rating: NR
Since World War ll, blood has been considered "the gift of life." But today a growing number of experts are questioning whether blood transfusions should be so widely used. Need to Know investigates whether the risks of transfusions outweigh the benefits
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Blood test
The risks of blood transfusions.
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