1. Gynecology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
2. Infertility Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
3. Department of Obstetrics and Gynecology, Sapienza University, 00185 Rome, Italy
4. Department of Clinical Sciences and Community Health, Università degli Studi, 20122 Milan, Italy