1. Postgraduate Program in Endocrinology; Federal University of Rio Grande do Sul; Porto Alegre Rio Grande do Sul Brazil
2. Endocrine Division; Hospital de Clínicas de Porto Alegre; Porto Alegre Rio Grande do Sul Brazil
3. Institute of Cardiology/University Foundation of Cardiology of Rio Grande do Sul; Porto Alegre Rio Grande do Sul Brazil
4. Laboratory of Cardiovascular Physiology; Institute of Basic Health Sciences; Federal University of Rio Grande do Sul; Porto Alegre Rio Grande do Sul Brazil
5. Department of Physiology and Biophysics; Institute of Biomedical Sciences; University of São Paulo; São Paulo Brazil