速效救心丸的第四个方法：善用拖延。
The fourth method of the Procrastination Treatment Pills is to make good use of delay.
目的：比较两种救心丸治疗冠心病心绞痛(胸痹证)的疗效。
Compare the efficacy of two kinds of heart-saving pill treating angina pectoris (chest-Bi syndrome).
目的：比较两种救心丸治疗冠心病心绞痛(胸痹证)的疗效。
Compare the efficacy of two kinds of heart-saving pill treating angina pectoris (chest-Bi syndrome).
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