1. Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto, Canada;
2. Ankara Private IVF Center, Ankara, Turkey;
3. Peking Union Medical College Hospital, Beijing, China;
4. Department of Obstetrics and Gynecology, University Hospital of Bern and University of Bern, Bern, Switzerland;
5. Department of Obstetrics and Gynecology, Academic Hospital of Obstetrics and Gynecology, University of Cologne, Cologne, Germany;
6. Department of Biomedical Sciences for Health, University of Milan, Milan, Italy;
7. Department of Gynecological Endocrinology, D.O. Ott Research Institute of Obstetrics, Gynecology and Reproductology, Saint Petersburg, Russia