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howardgiles112 howardgiles112
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6 years ago
Lewis quit smoking today. When will his risk for cancer approach that of a lifetime nonsmoker?
 A) 8 years after quitting
  B) 10 years after quitting
  C) 12 years after quitting
  D) 15 years after quitting
  E) never
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Flamebrain920Flamebrain920
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6 years ago
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6 years ago
Good timing, thanks!
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Yesterday
Thanks
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2 hours ago
Helped a lot
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