Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleRate of clinical progression in Parkinson's disease. A prospective study.AuthorsSchrag, Anette; Dodel, Richard; Spottke, Annika; Bornschein, Bernhard; Siebert, Uwe; Quinn, Niall P.PublicationMovement Disorders, 2007, Vol 22, Issue 7, p938ISSN0885-3185Publication typeArticleDOI10.1002/mds.21429