1. Department of Obstetrics and Gynecology, Faculdade de Medicina de Jundiaí, Jundiaí, SP, Brazil
2. Bayer, São Paulo, SP, Brazil
3. Department of Obstetrics and Gynecology, Universidade Estadual de Campinas, Campinas, SP, Brazil
4. Department of Obstetrics, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
5. Department of Gynecology and Obstetrics, Women's Health Reference Center, Hospital Pérola Byington, São Paulo, SP, Brazil