have no causal
没有因果关系
以上为机器翻译结果,长、整句建议使用 人工翻译 。
So, while the evidence is mounting that if you have migraine with aura, you are at increased risk of having a P.F.O. (and vice versa), there is no firm evidence that this association is causal.
所以,即便存在证据表明患有先兆偏头痛的病人有较高风险患有P.F.O.(反之亦然),也没有确定的证据能够说明两者存在因果关系。
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