[1] Univ Oslo, Oslo Univ Hosp, Norwegian Ctr Mental Disorders Res NORMENT, Oslo, Norway
[2] Univ Stavanger, Stavanger Univ Hosp, Ctr Age Related Med SESAM, Stavanger, Norway
[3] Pontificia Univ Javeriana, Sch Med, Semillero Neurociencias & Envejecimiento Ageing I, Bogota, Colombia
[4] McGill Univ, McGill Univ Hlth Ctr, Montreal, PQ, Canada
[5] Stavanger Univ Hosp, Ctr Age Related Med SESAM, Stavanger, Norway
[6] Kings Coll London, Inst Psychiat Psychol & Neurosci, London, England