Evaluation of the efficacy and safety of terguride in patients with fibromyalgia syndrome: Results of a twelve-week, multicenter, randomized, double-blind, placebo-controlled, parallel-group study. - Distler O; Eich W; Dokoupilova E; Dvorak Z; Fleck M; Gaubitz M; Hechler M; Jansen JP; Krause A; Bendszus M; Pache L; Reiter R; et al. (Arthritis & Rheumatism, 2010)