All links go directly to PubMed entries. All articles that are unquestionably free full-text will have FREE ahead of their citation. Please try any citation that does not have FREE next to it to see if you do have access to this article.
Articles known to be of high quality, such as Cochrane Reviews, will be marked as such. While all articles were found in PubMed and are published in reputable journals, the quality of individual articles may vary. Always remember to appraise literature for quality while reviewing.
Guidelines on this topic are available below and duplicated on the Guidelines page.
Most links go to the PubMed.gov permalink. This is because links on the publisher's website can change. The full-text is available from the PubMed listed here.