1. Gynecology and Obstetrics Service, Hospital Universitário Mario Palmério, Universidade de Uberaba, Uberaba, MG, Brazil
2. Department of Obstetrics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
3. Department of Obstetrics and Gynecology, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil