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作者采用随机双盲交叉实验法观察了硝苯啶、硝酸异山梨酯单用或合用治疗慢性稳定型心(?)痛的疗效。慢性稳定型心绞痛患者12例,男11例,女1例,
The authors used a randomized double-blind crossover experiment to observe the efficacy of nifedipine and isosorbide dinitrate alone or in combination in the treatment of chronic stable heart ache. 12 patients with chronic stable angina, 11 males and 1 female,