Prefumo Federico, Pagani Giorgio, Fratelli Nicola, Benigni Ariela, Frusca Tiziana
Maternal-Fetal Medicine Unit, Department of Obstetrics and Gynaecology, University of Brescia, Piazzale Spedali Civili 1, Brescia, Italy.
Prenat Diagn. 2010 Apr;30(4):378-9. doi: 10.1002/pd.2461.