Additional file 1 of Use of non-governmental maternity services and pregnancy outcomes among undocumented women: a cohort study from NorwayFrode Eick, Odd Martin Vallersnes, Heidi E. Fjeld, Ingvil Krarup Sørbye, Guro Storkås, Marthe Ekrem, Marie Børmer, Sara Andrea Løberg, Cathrine Ebbing, Nanna Voldner & Cecilie Dahl
Additional file 1. Directed Acyclic Graphs.
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