Hi,

Does anyone have any references from national or international organisations stating that randomised trials are requires (or usually required)? For example from the FDA, WHO, etc?

For example the FDA statement is here: http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=314.126

I will compile and re-post responses in case anyone else is interested.

Thanks in advance,