A copy of the full ethical approval document should be attached to the submitted manuscript. As a reviewer I sometimes see "Ethical approval was received, ref KC256/541" and for all I know it's the model number of the PI's dishwasher.
Nick Brown
My much more radical opinion is that all ethical approvals for human/animal biomedical research should be openly published, and all papers resulting from those studies should be easily linked to the approval. This one *really* freaks people out and I suspect we all know why.
Darren Dahly
Presumably you already have an ethical approval in place for human-participant or animal research. Are people really wanting to argue that there shouldn't be a clear correspondence between the study that was approved and the study that is eventually published? A RR just adds transparency. 2 cents.