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问:我老伴心脑血管都有毛病,为预防中风,她一直按照医生推荐的剂量服用阿斯匹林,但最近出现便血的副作用。这是为什么?应该怎
Q: My husband has cardiovascular and cerebrovascular problems. To prevent stroke, she has been taking aspirin at the doctor’s recommended dose. Recently, there has been a side-effect of blood in the stool. Why is this?