1. Pharmacology and Therapeutics Research Program Universidade Federal do Rio Grande do Sul (UFRGS) Porto Alegre Brazil
2. Cognitive and Behavioral Neurology Center Neurology Service Hospital de Clínicas de Porto Alegre (HCPA) Porto Alegre Brazil
3. Faculty of Medicine Universidade Federal do Rio Grande do Sul (UFRGS) Porto Alegre Brazil
4. Department of Biochemistry Institute of Health Sciences Universidade Federal do Rio Grande do Sul (UFRGS) Porto Alegre Brazil
5. Department of Psychiatry University of Pittsburgh Pittsburgh Pennsylvania USA