Department of Health Sciences, University of Florence and Meyer Children's University Hospital, Viale Pieraccini 24, 50139 Florence, Italy. Electronic address: martina.cortimiglia@meyer.it.
The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians