[1] UCLA Mattel Childrens Hosp, David Geffen Sch Med, Los Angeles, CA USA
[2] Univ Hosp Southampton, Southampton, Hants, England
[3] UCL Great Ormond St Inst Child Hlth, London, England
[4] Univ Vermont, Coll Med, Burlington, VT USA
[5] Centennial Childrens Hosp, Nashville, TN USA
[6] UTHSC Pediat Neurol, LeBonheur Childrens Hosp, Memphis, TN USA
[7] Sunovion Pharmaceut Inc, London, England
[8] BIAL Portela Ca SA, Trofa, Portugal