1 Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
2 Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil. Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Centro de Pesquisa Clínica, Faculty of Medicine, Graduate Program in Psychiatry and Behavioral Sciences, Porto Alegre, RS, Brazil.