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. 2015 May 14;16:157. doi: 10.1186/s12859-015-0549-5

Table 6.

Number of fact occurrences in text sources

Genre Source Fact occurrences
Scientific Publications PubMed Medline 39,266
PubMed Central 6,979
Encyclopedic Articles Drugs.com 461,130
Mayo Clinic 35,300
Medline Plus 6,559
RxList 5,818
Wikipedia Health 17,588