1 Department of Obstetrics, IRCCS San Gerardo dei Tintori Foundation, University of Milano-Bicocca 20900 Monza, Italy. Electronic address: valentina.giardini@irccs-sangerardo.it.
2 Laboratory Medicine, IRCCS San Gerardo dei Tintori Foundation 20900 Monza, Italy.
3 Department of Obstetrics, MBBM Foundation Onlus, University of Milano-Bicocca 20900 Monza, Italy.
4 Department of Obstetrics, IRCCS San Gerardo dei Tintori Foundation, University of Milano-Bicocca 20900 Monza, Italy.