[1
]
Department of Obstetrics and Gynecology, Center for Fetal Care and High-Risk Pregnancy,
University of Chieti, Chieti, Italy.
[2
]
Division of Maternal Fetal Medicine Ospedale Cristo Re, Università di Roma Tor Vergata,
Roma, Italy.
[3
]
Department of Obstetrics and Gynaecology, The First I.M. Sechenov Moscow State Medical
University, Moscow, Russia.
[4
]
Department of Obstetrics and Gynecology, University of Foggia, Foggia, Italy.