1. Department of Obstetrics and Gynecology University Hospitals Leuven Leuven Belgium
2. Department of Obstetrics and Gynecology Clinica Universidad de Navarra Pamplona Spain
3. Department of Obstetrics and Gynecology University of Cagliari, Policlinico Universitario Duilio Casula Cagliari Italy
4. SEMEAR Fertilidade, Reproductive Medicine Ribeirão Preto Brazil
5. Ribeirão Preto Medical School University of São Paulo Ribeirão Preto Brazil