Payne A P, Sutcliffe R G, Campbell J M, Favor G, Russell D, Bennett N K, Clarke D J, Branton R, Davies R W, Simpson E, Tsang C, Baxendale R H
The Institute of Biomedical and Life Sciences, Glasgow University, Scotland.
Mov Disord. 1998 Sep;13(5):832-4. doi: 10.1002/mds.870130514.