Teixeira, CláudiaTejera, EduardoMartins, HelenaPereira, AntónioCosta-Pereira, AltamiroRebelo, Irene2014-07-282014-07-282014-06-27http://hdl.handle.net/10400.16/1628engFirst trimester aneuploidy screening program for preeclampsia prediction in a portuguese obstetric populationconference object