Fig. 2From: Bibliometric analysis of trends and issues in traditional medicine for stroke research: 2004–2018The relational chart of AI and AAI from 2009 to 2018 for the top 5 countries. The dotted line AI = 1 represents the global average contribution to TCAM for stroke, and AAI = 1 the global average impact. The reference line y = x represents the balance of effort and impact of a country’s researchBack to article page