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Amilton dos Santos Júnior. 1 Department of Psychiatry, School of Medical Sciences ( FCM) , State University of Campinas ( Unicamp) , Campinas, SP, Brazil.
Taciane Barbosa Henriques. 2 Laboratory of Human Genetics, Center for Molecular Biology and Genetic Engineering ( CBMEG) , Unicamp, Campinas, SP, Brazil.
Maricilda Palandi de Mello. 2 Laboratory of Human Genetics, Center for Molecular Biology and Genetic Engineering ( CBMEG) , Unicamp, Campinas, SP, Brazil.
Adriana Perez Ferreira Neto. 1 Department of Psychiatry, School of Medical Sciences ( FCM) , State University of Campinas ( Unicamp) , Campinas, SP, Brazil.
Lúcia Arisaka Paes. 1 Department of Psychiatry, School of Medical Sciences ( FCM) , State University of Campinas ( Unicamp) , Campinas, SP, Brazil.
Osmar Henrique Della Torre. 1 Department of Psychiatry, School of Medical Sciences ( FCM) , State University of Campinas ( Unicamp) , Campinas, SP, Brazil.
Letícia Esposito Sewaybricker. 3 Growth and Development Laboratory, Center for Investigation in Pediatrics ( CIPED) , FCM, Unicamp, Campinas, SP, Brazil.
Thiago Salum Fontana. 1 Department of Psychiatry, School of Medical Sciences ( FCM) , State University of Campinas ( Unicamp) , Campinas, SP, Brazil.
Eloisa Helena Rubello Valler Celeri. 1 Department of Psychiatry, School of Medical Sciences ( FCM) , State University of Campinas ( Unicamp) , Campinas, SP, Brazil.
Gil Guerra Júnior. 3 Growth and Development Laboratory, Center for Investigation in Pediatrics ( CIPED) , FCM, Unicamp, Campinas, SP, Brazil. 4 Department of Pediatrics, Pediatric Endocrinology Unit, FCM, Unicamp, Campinas, SP, Brazil.
Paulo Dalgalarrondo. 1 Department of Psychiatry, School of Medical Sciences ( FCM) , State University of Campinas ( Unicamp) , Campinas, SP, Brazil.
Funding: This work was supported by the São Paulo Research Foundation (FAPESP-Process no. 2012/14005-1).
Address correspondence to: Amilton dos Santos Júnior, MD, PhD, Rua Hermantino Coelho 841, Apartment D 54, Bairro Mansões Santo Antonio, Campinas - São Paulo, Brasil 13087-500, E-mail: [email protected]
Introduction
Risperidone is increasingly being used in children and adolescents because of its well-established clinical efficacy and lower risk of neurological adverse effects compared with conventional antipsychotics (Troost et al. 2007). Its use is not limited to schizophrenia and other psychotic states, whose onset is very rare before 18 years of age (Correll 2008; Freeman et al. 2009; Ercan et al....