Grey matter abnormalities in brazilians: with first-episode psychosis - Schaufelberger, Maristela S; Duran, Fabio L. S; Lappin, Julia M; Scazufca, Marcia; Amaro Junior, Edson; Leite, Claudia C; Castro, Claudio C. de; Murray, Robin M; McGuire, Philip K; Menezes, Paulo Rossi; Busatto Filho, Geraldo (The British journal of psychiatry, 2007)