[1] Kings Coll London, Dept Crit Care, GKT Sch Med Educ, Fac Life Sci & Med, London, England
[2] Gomez Ulla Hosp, Dept Clin Neurophysiol, Madrid, Spain
[3] Kings Coll London, Inst Psychiat, Dept Basic & Clin Neurosci Psychol & Neurosci IoP, London, England
[4] Salford Royal Fdn Trust, Dept Endocrinol, Manchester, Lancs, England
[5] Kings Coll Hosp NHS Trust Fdn, Dept Clin Neurophysiol, London, England
[6] Kings Coll Hosp NHS Trust Fdn, Dept Neurol, London, England