Fig. 2From: Comparison of the impact of Tripterygium wilfordii Hook F and Methotrexate treatment on radiological progression in active rheumatoid arthritis: 2-year follow up of a randomized, non-blinded, controlled studyCumulative probability distribution for the modified total Sharp scores (a), joint erosions (b), and joint space narrowing (c) over the 2 years. MTX, methotrexate; TwHF, Tripterygium wilfordii Hook FBack to article page