Blind method was not restricted.
不限定盲法。
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Methods The random and double blind method was used.
方法采用随机双盲方法。
DESIGN Randomized control experiment and single blind method.
随机对照实验，单盲法评估。
There are also documents written in Braille, a method used by blind people to read and write.
VOA: special.2010.07.09
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