Fig. 3From: Epidemiological research on rare diseases using large-scale online search queries and reported case dataDisease intersections in two adjacent years. (a) Diseases with a ranking difference of < -20 between the search and reported case data (b) Diseases with a ranking difference of -20 to 20 between the search and reported case data (c) Diseases with a ranking difference of > 20 between the search and reported case dataBack to article page