研究者发现，与非暴露组相比，暴露组明显增加了癌症发病风险，尤其是乳腺癌和结直肠癌。

Compared to the non-exposed group, those in the potentially exposed group had a statistically significantly increased risk for cancer, especially breast and colorectal cancer, the researchers found.

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没有非暴露性创伤的控制组。

There was no non-trauma-exposed control group.

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研究者把随访时间分成“暴露”和“非暴露”两组，并确定每个时间段的每日剂量和累积剂量。

The team divided the follow-up time period into the categories of "current" and "no exposure," and determined the daily dose and cumulative dose for each time period.

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