1. Department of Gynecology; University Hospital; Zurich Switzerland
2. Department of Obstetrics and Gynecology; Catholic University of the Sacred Heart; Rome Italy
3. Faculty of Medicine; University of Buenos Aires; Buenos Aires Argentina
4. Department of Gynecology; St. George's University of London; London United Kingdom
5. Department of Obstetrics and Gynecology; Osaka City Graduate School of Medicine; Osaka Japan
6. Department of Obstetrics and Gynecology; University of Miami School of Medicine; Miami Florida
7. Gynecology Division; Universidade de São Paulo; São Paulo SP Brazil
8. Surgical Department; Policlinico “Umberto I”, Sapienza University; Rome Italy
9. Department of Obstetrics and Gynecology; Hospital of Vicenza; Vicenza Italy