全文如下：
Authors are required to include a cover letter with their submission explaining the significance and originality of the work, the problem that is being addressed, and why the manuscript belongs in the journal.
Please initial the box below to indicate that you have fulfilled this requirement.
We have provided a cover letter that contains a statement of significance and originality as outlined above.
这里有个框（但是这里显示不出来）
Note: This box MUST be initialed in order to complete your submission.
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