By their own young hand.

Abstract

would not preclude later publication of a scientific paper because the presentation would be different and the original source not easily retrievable.Like other forms of "grey literature" these reports do not appear in widely available databases and indexes, and the information would be virtually unobtainable by someone who did not already know it existed-particularly someone outside Britain.Annual reports of directors of public health are also unlikely to cause problems, for similar reasons.For the BMJ to consider publishing a paper both these criteria will normally have to be met.We will, however, continue to consider each case on its merits, and the prime requirement is that authors should tell us if there is any possibility of duplicate publication.

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Papers that cite the same references — the relational fallback while embeddings are still backfilling.