方法1、将符合纳入标准的80例患者采用简单随机化的分组方法将参加实验的对象随机分成两组，每组40例。
Methods1. To conform to the standards in 80 patients using simple random method, were randomly divided into a and B, 40 cases in each group.
方法1、将符合纳入标准的80例患者采用简单随机化的分组方法将参加实验的对象随机分成两组，每组40例。
Methods1. To conform to the standards in 80 patients using simple random method, were randomly divided into a and B, 40 cases in each group.
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