?url_ver=Z39.88-2004&rft_id=PQ+ETD%3A592502&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=D.&rft.aulast=Williams&rft.au=Williams%2C+D.&rft.degree=Doctoral&rft.date=2006&rft.inst=University+of+London&rft.tpages=230&rft.title=Clinical%2C+pathological+and+biochemical+diversity+in+progressive+supranuclear+palsy.