他们接受《英国癌症杂志》采访时表示：其他因素，如家族病史等，会带来更多风险。
Other factors, like family history, carry more of a risk, they told the British Journal of Cancer.
但是研究者可能会通过控制其他的患病因素会割裂饮酒与患乳腺癌的联系，比如家族病史和初次怀孕年龄。
But the researchers were able to isolate the link between drinking and breast cancer by controlling for a host of other risk factors, such as family history of the disease and age at first pregnancy.
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