Prospective multicentre Italian pregnancy cohort study (SIMPLE) on the associations of maternal first trimester SIMPLE nutritional score with early placental function markers and pregnancy outcomes.

Ethical approval for this study was obtained from the Milano Area 1 Ethics Committee (No 46091, 7 November 2018) prior to the commencement of the research.The dissemination plan includes the presentation of abstracts and findings at national and international scientific meetings.