Sentence examples for references were searched from inspiring English sources

The work was done comprehensively and systematically and further references were searched by hand.

References were searched, returning one extra article.

Second, key journals, websites and references were searched purposefully.

Primary and secondary references were searched to identify additional studies.

References were searched to identify additional relevant studies.

References were searched, and experts and societies of AT or musicians' medicine contacted for further publications.

As a side result, we discovered that a striking number of bibliographic references included major errors, i.e. errors that involve the data elements by which references are searched by users in Medline [ 20].

In addition, reviews and reference lists were searched for further references, and experts were contacted for any additional references.

Once relevant articles were identified their references lists were searched for additional articles.

Reference databases were searched for author-designated case-control studies.

Reference lists were searched for additional articles.