A six-month multicentre, double-blind, bromocriptine-controlled study of the safety and efficacy of ropinirole in the treatment of patients with Parkinson's disease not optimally controlled by L-dopa. 043 Study Group - Brunt,E.R.; Brooks,D.J.; Korczyn,A.D.; Montastruc,J.L.; Stocchi,F. (J Neural Transm, 2002)