EG-VEGF maternal levels predict spontaneous preterm birth in the second and third trimesters in pregnant women with risk factors for placenta-mediated complications oleh Tiphaine Raia-Barjat, Céline Chauleur, Constance Collet, Florence Rancon, Pascale Hoffmann, Morgane Desseux, Nicolas Lemaitre, Mohamed Benharouga, Antoine Giraud, Nadia Alfaidy