Erratum
Unfortunately, the original version of this article [1] contained an error.
Under ‘Study 2’, the text read: “The first search was the same as in the Study 1, except that we screened all articles that were co-cited in more than 1 % of the citing articles.”
However, this sentence should have also included articles that were “co-cited more than once”, to read: “The first search was the same as in the Study 1, except that we screened all articles that were co-cited more than once and co-cited in more than 1 % of the citing articles.”
We apologise for this error.
References
Janssens ACJW, Gwinn M. BMC Med. Res. Methodol. 2015;15:84. doi:10.1186/s12874-015-0077-z.
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The online version of the original article can be found under doi:10.1186/s12874-015-0077-z.
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Janssens, A.C.J.W., Gwinn, M. Erratum to: Novel citation-based search method for scientific literature: application to meta-analyses. BMC Med Res Methodol 15, 97 (2015). https://doi.org/10.1186/s12874-015-0093-z
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DOI: https://doi.org/10.1186/s12874-015-0093-z