1 Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.
2 Unicamillus - International Medical University in Rome, Rome, Italy.
3 Department of Obstetrics and Gynecology, Clínica Universidad de Navarra School of Medicine, University of Navarra, Pamplona, Spain.
4 Department of Obstetrics and Gynecology, QuironSalud Hospital, Málaga, Spain.
5 Department of Obstetrics and Gynecology, Jessaziekenhuis, Hasselt, Belgium.
6 Obstetrics and Gynecology Unit, Morgagni-Pierantoni Hospital, Forlì, Italy.
7 Università Cattolica del Sacro Cuore, Istituto di Clinica Ostetrica e Ginecologica, Rome, Italy.