Hydroxychloroquine Compared with Placebo in Rheumatoid Arthritis.Published in:Annals of Internal Medicine, 1993, v. 119, n. 11, p. 1067, doi. 10.7326/0003-4819-119-11-199312010-00002By:Clark, Patricia;Casas, Emilio;Tugwell, Peter;Medina, Clementina;Gheno, Constanza;Tenorio, Guadalupe;Orozco, Jose AntonioPublication type:Article