Fig. 3From: Bibliometric analysis of rheumatology research in the Arab countriesThe annual representation of articles in the top ten-rheumatology journals from 1997 to 2013 (by 2 year impact factor in the journal citation index). Absolute number of publications is represented on the left axis (red line and thick trendline). Proportion of papers is represented on the right axis (blue line and thin trendline)Back to article page