Excerpt from the P.I.E. Guidelines for Authors – Acknowledgement

1    Before publication, all contributing authors should be briefed about expected roles and desired contributions. Any changes to the list of contributors made throughout the exercise must be the result of a consultation between all the listed authors including those already removed from the list.

2    All authors need to approve the final publication before its release. Upon the publication of the agreed version, any queries and comments must be forwarded to all involved parties before a response is issued.

3    Authors should never consciously set out to credit a contributor for work that they have not performed, nor should they knowingly discredit someone who has had a meaningful involvement with the finished article.