METHODS: Cortex fraxini total coumarin was involved in a randomized, double-blind, placebo parallel control, dosage-reaction design and superiority test.
方法：采用随机、双盲、安慰剂平行组对照、剂量反应研究设计和优效性检验。
Methods take forward looking and double-blind methods with 32 cases in test group and 28 cases in control group.
方法采用前瞻性、双盲随机对照试验设计，以加替沙星为对照药，试验组32例，对照组28例。
Methods take forward looking and double-blind methods with 32 cases in test group and 28 cases in control group.
方法采用前瞻性、双盲随机对照试验设计，以加替沙星为对照药，试验组32例，对照组28例。
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