 Hospital investigators are: BICHAT Claude Bernard Pr LUTON, Armand Trousseau Pr BENIFLA, Jean VERDIER Pr CARBILLON, BEAUJON Pr LUTON, Louis MOURIER Pr MANDELBROT, Versailles Dr PANEL. Inclusion will be for 6 years and 9 months. Women will be included during the last trimester and evaluation will be perform on 8 weeks, 6 and 12 month after delivery. 