[1] Kings Coll London, NIHR Wellcome Trust Kings Clin Res Facil, London, England
[2] Charite Univ Med Berlin, Dept Neurol, Berlin, Germany
[3] Leiden Univ, Dept Neurol, Med Ctr, Leiden, Netherlands
[4] CHU Nice, Pain Dept, Nice, France
[5] Novartis Pharma AG, Basel, Switzerland
[6] Novartis Pharmaceut, E Hanover, NJ USA