review a review paper with unpublished data I am reviewing a paper, which is a review paper. The paper seems good, but the authors included many their own observations, which are unpublished. Is it good for a review paper to include may unpublished findings?

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A review paper contains commentary about previously published work, a critical evaluation of that work, and possibly a synthesis based on that published work. I can imagine a rare case where an author might want to include one or two pieces of new data, possibly referenced as "to be published." If there was very much of this I would recommend that it be removed.