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DESIGN Randomized control experiment and single blind method.
随机对照实验，单盲法评估。
youdao
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MethodsA prospective randomized single-blind clinical study of the control method.
方法以前瞻性的随机单盲对照法进行临床研究。
youdao
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MethodsA prospective randomized single-blind clinical study of the control method.
方法以前瞻性的随机单盲对照法进行临床研究。
youdao