title: Predominance of symptoms over time in early-onset psychosis: a principal component factor analysis of the Positive and Negative Syndrome Scale.
authors.affiliation: Adolescent Unit, Department of Psychiatry, Hospital General Universitario Gregorio Marañón, C/ Ibiza 43, 28009 Madrid, Spain. mrapado@hggm.es
authors.forename: Marta
authors.initials: M
authors.lastname: Rapado-Castro
authors.forename: Cesar
authors.initials: C
authors.lastname: Soutullo
authors.forename: David
authors.initials: D
authors.lastname: Fraguas
authors.forename: Celso
authors.initials: C
authors.lastname: Arango
authors.forename: Beatriz
authors.initials: B
authors.lastname: Payá
authors.forename: Josefina
authors.initials: J
authors.lastname: Castro-Fornieles
authors.forename: Ana
authors.initials: A
authors.lastname: González-Pinto
authors.forename: Mara
authors.initials: M
authors.lastname: Parellada
authors.forename: Montserrat
authors.initials: M
authors.lastname: Graell
authors.forename: Inmaculada
authors.initials: I
authors.lastname: Baeza
authors.forename: Igor
authors.initials: I
authors.lastname: Bombin