Comparison of Tripterygium wilfordii Hook F versus sulfasalazine in the treatment of rheumatoid arthritis: a randomized trial - Goldbach-Mansky, R; Wilson, M; Fleischmann, R; Olsen, N; Silverfield, J; Kempf, P; Kivitz, A; Sherrer, Y; Pucino, F; Csako, G; Costello, R; Pham, T H; Snyder, C; van der Heijde, D; Tao, X; Wesley, R; Lipsky, P E (Ann Intern Med, 2009)
W49–W51