title: Reply to letter to the editor: Is there anything more to learn from SWEDD?
authors: Pacific Parkinson's Research Centre, University of British Columbia, British Columbia, Vancouver, Canada. dwile@mail.ubc.ca.
authors: Daryl J
authors: DJ
authors: Wile
authors: Pacific Parkinson's Research Centre, University of British Columbia, British Columbia, Vancouver, Canada.|Department of Physics and Astronomy, University of British Columbia, British Columbia, Vancouver, Canada.
authors: Vesna
authors: V
authors: Sossi
authors: Pacific Parkinson's Research Centre, University of British Columbia, British Columbia, Vancouver, Canada.
authors: A Jon
authors: AJ
authors: Stoessl
mesh_terms: D006801:Humans; D010300:Parkinson Disease