【摘 要】
：
问题的重要性:在美国,有症状的冠心病人估计有3,870,000,年死亡数为675,580(据1974年发表的资料)。临床上无症状的冠心病患者则尚为数不详。近时一些观察虽
The Importance
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问题的重要性:在美国,有症状的冠心病人估计有3,870,000,年死亡数为675,580(据1974年发表的资料)。临床上无症状的冠心病患者则尚为数不详。近时一些观察虽
The Importance of the Problem: In the United States, an estimated 3,870,000 patients with symptoms of coronary heart disease and an annual death rate of 675,580 (data from 1974). Clinically asymptomatic patients with coronary heart disease is still unknown. Although some recent observations
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