Medical studies don't need to be declared to the public, all they'd need to do is contact the doctors who already prescribe medical marijuana and ask them if th

Medical studies don't need to be declared to the public, all they'd need to do is contact the doctors who already prescribe medical marijuana and ask them if they have any patients willing to participate. If you're contacting practitioners who already prescribe MM they're unlikely to speak out against the study, besides you could force non-disclosure agreements on participants. It's kind of morally-grey, but if there's big enough concern about getting shut down then you'll get enough people willing to sign an NDA in the chance they might be able to help their child. This wouldn't be the sort of study you stick an ad for in the sunday paper.