The data that support the findings of this study were compiled, checked, and distributed by the General Council of Yvelines, the perinatal bureau of the Ile-de-France Regional Public Health Administration Agency, and the Inserm Research Unit 1153. Restrictions apply to the availability of these data, which were used under license for this study. Data are available from the local perinatal network (MYPA) at email address: contact@mypa.fr with the permission of the General Council of Yvelines.