1. Obstetrics and Gynecology Department, Irmandade Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brazil
2. Obstetrics and Gynecology Department, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
3. Department of Gynaecologic Oncology & Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States
4. Internal Medicine, Irmandade Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brazil
5. Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil