[1] Yale Univ, Sch Med, Ctr Child Study, New Haven, CT 06520 USA
[2] Yale Univ, Sch Med, Dept Psychiat, New Haven, CT 06520 USA
[3] Heidelberg Univ, Dept Psychol, D-6900 Heidelberg, Germany
[4] Univ Fed Rio de Janeiro, Inst Psychiat, BR-21941 Rio De Janeiro, Brazil
[5] Univ Fed Sao Paulo, Dept Psiquiatria, Sao Paulo, Brazil
[6] Univ Fed Ciencias Saude Porto Alegre, Dept Psychiat, Porto Alegre, RS, Brazil
[7] Univ Sao Paulo, Fac Med, Dept Psychiat, BR-05508 Sao Paulo, Brazil