你可以为某种疗效而设计研究，但想获得确凿的证据证实这种治疗是否可以预防心脏病发生或卒中则是复杂的。
You can design studies that show some benefit but to know from the hard evidence whether it prevents you from having a heart attack or stroke is more complex.
目的研究卒中单元对脑卒中患者的早期疗效，探讨适合国情的卒中单元。
Objective it is to study the early therapeutic effect of stroke unit on stroke patients and to discuss the stroke unit which is agreed with the situation of our country.
目的研究卒中单元对脑卒中患者的早期疗效，探讨适合国情的卒中单元。
Objective it is to study the early therapeutic effect of stroke unit on stroke patients and to discuss the stroke unit which is agreed with the situation of our country.
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