Figure 1.

Venn diagram visualization of a PubMed search. 37,600 documents were retrieved when "propranolol" was searched in PubMed and 244,225 for "hypertension". The overlap, 4,155 documents, is the set of documents having both "propranolol" and "hypertension".

Zhou et al. Journal of Biomedical Discovery and Collaboration 2006 1:2   doi:10.1186/1747-5333-1-2
Download authors' original image