[1] Kings Coll London, Inst Psychiat, Dept Psychol Med, Sect Brain Maturat, London SE5 8AF, England
[2] Univ Rio de Janeiro, Inst Biophys Carlos Chagas Filho, Rio De Janeiro, Brazil
[3] Kings Coll London, Inst Psychiat, Dept Biostat, Brain Image Anal Unit, London SE5 8AF, England