1 Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy; Obstetrics and Gynecology Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy.
2 Obstetrics and Gynecology Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy.
3 Immunohematology and Transfusion Centre, IRCCS Istituto Giannina Gaslini, Genova, Italy.
4 Obstetrics and Gynecology Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy. Electronic address: [email protected].