1. Departament of Gynecologic Surgery, Hospital Mãe de Deus, José de Alencar 1244 apt 1009, Porto Alegre 90880-480, RS, Brazil
2. Postgraduate Program in Medicine: Medical Sciences at Federal University of Rio Grande do Sul, Porto Alegre 90040-060, RS, Brazil
3. Laboratory of Epidemiology and National Institute for Translational Medicine, Postgraduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, 88806-000 Criciúma, SC, Brazil