Methods: 61 patients with massive emptysis were divided into two group in random.
方法:将61例大咯血患者随机分为两组。
Methods 122 patients with massive emptysis were divided into two group in random.
方法:将122例大咯血患者随机分为两组。
Methods 122 patients with massive emptysis were divided into two group in random.
方法:将122例大咯血患者随机分为两组。
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