1. Department of Gynecology and Obstetrics, Jundiai School of Medicine, Jundiai, Brazil
2. Department of Gynecology and Obstetrics, ABC School of Medicine, Santo Andre, Brazil
3. Department of Gynecology and Obstetrics, Botucatu School of Medicine UNESP – Sao Paulo State University, Botucatu, Brazil
4. Department of Obstetrics and Gynecology, State University of Campinas, Campinas, Brazil
5. Paulista Center for Clinical Research, CEPIC, Sao Paulo, Brazil
6. Department of Gynecology and Obstetrics, PUC-RS, Porto Alegre, Brazil
7. Department of Obstetrics and Gynecology, School of Medicine, UFRGS – Federal University of Rio Grande do Sul, Porto Alegre, Brazil
8. Department of Clinical Research, Libbs Farmacêutica Ltda, Sao Paulo, Brazil