Theodosiou T, Vizirianakis IS, Angelis L, Tsaftaris A, Darzentas N. MeSHy: Mining unanticipated PubMed information using frequencies of occurrences and concurrences of MeSH terms. J Biomed Inform. 2011 Dec;44(6):919-26. Epub 2011 Jun 13. PubMed PMID: 21684350. doi: http://dx.doi.org/10.1016/j.jbi.2011.05.009