Wikipedia:Invitation to edit/pain

You can edit this article Click "show" for simple instructions:

Getting started

Click any of the [edit] links within the article and type into the box near the bottom.
If you add a claim, or substantially modify one, cite a scientific article or textbook that supports your claim. (See below.)
Spelling and grammar corrections or stylistic improvements are welcome and need no citations.
When you're finished, briefly describe what you've done in the "Edit summary" box and click "Publish changes".

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No original research

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Ideal sources for biomedical claims include general or systematic reviews in reliable, third-party sources, such as reputable medical journals, textbooks by recognized experts, or medical guidelines and position statements from reputable expert bodies.

Accurately reflect sources but do not copy chunks of copyrighted text. In terms of expression, your contribution should bear little resemblance to your source.

Content not accompanied by an inline "citation" (a footnote marker like this^[14] linked to specified pages in a journal, textbook, etc.) that supports it might be deleted.
Copy the style of other references in the article and type your reference between <ref> and </ref>. When you publish your work, the footnote marker^[14] will appear in the text where you typed the above, and the full reference will appear at the bottom of the article in the list of references.