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Parameters for Breast Cancer Study

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A recent study of breast cancer revealed that 13% of the women in the sample used antibiotics more than 500 days in their lifetime. Further, 79% of these "heavy antibiotics users" developed breast cancer. According to the American Cancer Society, one in twelve women will develop breast cancer at some time in her life. Of the numbers mentioned, which are parameters?

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Parameters for breast cancer studies are examined.

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A recent study of breast cancer revealed that 13% of the women in the sample used antibiotics more than 500 days in their ...

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