[1] Univ Cambridge, Addenbrookes Hosp, Dept Neurosci, Cambridge CB2 2QQ, England
[2] Cent Texas Neurol Consultants, Round Rock, TX USA
[3] Gen Hosp Sv Duh, Zagreb, Croatia
[4] INTEGRA Clin Res, San Antonio, TX USA
[5] Zagreb Med Sch, Zagreb, Croatia
[6] Univ Hosp Ctr, Zagreb, Croatia
[7] Med Univ Lodz, Lodz, Poland
[8] IP Pavlovs State Med Univ, St Petersburg, Russia
[9] Russian Acad Sci, Inst Human Brain, St Petersburg 196140, Russia
[10] Neurol Ctr San Antonio, San Antonio, TX USA
[11] St Marys Hlth Care, Hauenstein Ctr, Grand Rapids, MI USA
[12] Genzyme Corp, Cambridge, MA USA
[13] ReS Pharmaceut Serv Inc, Ft Washington, MD USA