Sentence examples for references of key from inspiring English sources

PubMed, EMBASE, Web of Science, COCHRANE and Academic Search Premier and references of key articles were searched in March 2012 to identify potentially relevant studies.

Additionally, references of key papers are searched by hand.

Fifth, we scanned references of key articles, including reviews and meta-analyses, for relevant related publications.

To mitigate any potential publication bias, we also reviewed the references of key papers.

References of key papers were reviewed, and experts were contacted to identify additional relevant papers.

We also reviewed the references of key publications to ensure that all relevant literature was included in the review.

Two further relevant papers were identified from searching the references lists of key articles.

The reference lists of key papers will be checked for additional references, and citation searches will be conducted on key papers and authors.

Reference lists of key publications were hand searched for additional references.

Additionally, the reference list of key papers was investigated, and the newly identified references were added.

Another study was identified by the manual search of the references of the key articles,making it a total of 5 studies.