- Controlled multicenter trial of tiopronin and d-penicillamine for rheumatoid arthritis. Pasero, G., Pellegrini, P., Ambanelli, U., Ciompi, M.L., Colamussi, V., Ferraccioli, G., Barbieri, P., Mazzoni, M.R., Menegale, G., Trippi, D. Arthritis Rheum. (1982)