Methods The random and double blind method was used.

方法采用随机双盲方法。

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METHODS: The double blind and random method was used.

方法：随机双盲双模拟对照试验。

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Method: the study adopt random and double-blind clinic method. Patients that conform to the condition can be selected.

方法：采用以安慰剂为对照药的临床随机和双盲研究。

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Method: the study adopt random and double-blind clinic method. Patients that conform to the condition can be selected.

方法：采用以安慰剂为对照药的临床随机和双盲研究。

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