1. Department of Pharmacology Faculty of Medicine of Ribeirao Preto University of Sao Paulo Ribeirao Preto Brazil
2. Department of Pharmacology State University of Campinas Campinas Brazil
3. Department of Internal Medicine Medical School of Ribeirao Preto University of Sao Paulo Ribeirao Preto Brazil
4. Departments of Pharmacology & Pediatrics Cardiovascular Research Centre University of Alberta Edmonton AB Canada
5. Department of Morphology, Estomatology and Physiology Dental School of Ribeirao Preto University of Sao Paulo Ribeirao Preto Brazil