1. Gynecological Endocrinology Unit; Division of Endocrinology; Hospital de Clínicas de Porto Alegre (HCPA); Porto Alegre Brazil
2. Federal Institute of Education, Science and Technology of Rio Grande do Sul; Porto Alegre Brazil
3. Department of Statistics; Federal University of Rio Grande do Sul; Porto Alegre Brazil
4. Laboratory of Molecular Endocrinology; Department of Physiology; Federal University of Rio Grande do Sul; Porto Alegre Brazil