Ethics can not ensure that subjects do not even know they are taking drug
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送交者: HunHunSheng 于 2007-01-26, 10:28:46:
回答: one disadvantage of placebo-controlled double blind clincial trial? 由 HunHunSheng 于 2007-01-26, 10:27:13:
But this violate current laws because a informed consent
is needed
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