方法：58例患者随机分为两组。治疗组（30例）给予单硝酸异山梨醇酯缓释片（索尼特）治疗；
Methods:58 patients with angina pectoris were randomly divided into 2 groups: the treatment group of 30 patients received isosorbide mononitrate sustained release tablets;
方法：58例患者随机分为两组。治疗组（30例）给予单硝酸异山梨醇酯缓释片（索尼特）治疗；
Methods:58 patients with angina pectoris were randomly divided into 2 groups: the treatment group of 30 patients received isosorbide mononitrate sustained release tablets;
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