Fig. 3 in The healing bitterness of Gentiana lutea L., phytochemistry and biological activities: A systematic review

Fig. 3. The quality assessment is based on a checklist adapted from the Cochrane Handbook for Systematic Reviews of Interventions. The in vivo (indicated by blue bar) and clinical studies (indicated by red bar) have been classified in high, medium, and low risk of bias. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)