Ethics can not ensure that subjects do not even know they are taking drug

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

after a subject signed the consent form, he still has right to - blackbox (101 bytes) 2007-01-26, 10:56:34 (122957)