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Offprints can only be ordered by the author using the order form accompanying the proofs, which must be returned by the specified deadline. Offprints are printed at the same time as the issue.
Reprints of any article can be ordered at any time by anyone wishing to acquire copies of any Nature Publishing Group articles. Queries should be addressed to the reprint department.
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More information can be found on the Reprints and Permissions FAQ page.