My conundrum is this. All my coauthors have provided advice from conception to completion, on the study itself, data analysis, write-up but haven't actually done anything at those stages other than provide me with advice. They have however, contributed critically to some parts of the writing. I have to complete a statement of authorship and am not sure how to accurately describe this. If I said:
"All authors contributed to conception of the study, data collection, and analysis."
This would be over-selling co-author contribution.
BUT, if I say:
"ABC conceived the study, collected the data, and conducted the analysis, all authors critically contributed to writing of the manuscript."
I am worried this undersells the input from others.
Is it better to over-sell, in this scenario?